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For example, assume that we know aaa, bbb, and \alpha: That's the easiest option. Use a calculator to find each angle measure to the nearest d. 382 views Apr 12, 2021 Expert educator Heather Z. from Oregon State University explains Find each angle measure to the nearest degree calculator See the fulmore.more. Using Trigonometry to Find Angle Measures. Our cotangent calculator accepts input in degrees or radians, so once you have your angle measurement, just type it in and press "calculate". cosB = 0.5 = 1/2. 1) tan A = 2.0503 64 2) cos Z = 0.1219 83 3) tan Y = 0.6494 33 4) sin U = 0.8746 61 5) cos V = 0.6820 47 6) sin C = 0.2756 16 Find the measure of the indicated angle to the nearest degree. Just like running, it takes practice and dedication. For those who need fast solutions, we have the perfect solution for you. Get help from our expert homework writers! 7 comments ( 24 votes) Upvote Flag Show more. 5/5 recommend, and there is options that is pretty cool is to explain to you how he got the answers by steps, bro I love this I hate that I have to pay how to do the steps but this is really easy to use if you don't mind paying $9. To solve a math equation, you need to figure out what the equation is asking for and then use the appropriate operations to solve it. VIDEO ANSWER: we're going to use a calculator to find the inverse Use your calculator to find each angle measure to the nearest degree. How to find the measure of the indicated angle to the nearest degree? Find each angle measure to the nearest degree calculator Using a trigonometric ratio to find an angle measure in a right triangle. If you had two or more obtuse angles, their sum would exceed 180 and so they couldn't form a triangle. cos -1(5/6) 34* p537 #9. Round lengths to the nearest tenth and angle measures to the nearest degree. We reviewed their content and use . To be able to calculate an arc measure, you need to understand angle measurements in both degrees and radians. Making educational experiences better for everyone. Honestly such a life save and time saver. The triangle angle calculator finds the missing angles in triangle. Knowing that 1 radian = 57.29578 degrees we can now find the conversion factor for converting back. Let's try the best Calculate the measure of each angle to the nearest degree. Date________________. Each triangle has six main characteristics: three sides a, b, c, and three angles (, , ). Expert Answer. Answer by stanbon (75887) ( Show Source ): You can put this solution on YOUR website! Kuta Software - Infinite Algebra 1. sinX >0 could be in quadrant I or II. Find each angle measure to the nearest degree Using Trigonometry to Find Angle Measures Date_____ Period____ Find each angle measure to the nearest degree. Use a Calculator to Find Angle Theta (Nearest Tenth of Degree) if Theta is Acute & sin (theta)=0.9465 Wendy 714 subscribers Subscribe Save 5.7K views 1 year ago Given that sin (theta)=0.9465 and. Find each angle measure to the nearest degree 1. Assume we want to find the missing angles in our triangle. What is . 11) B A C 8 11 Use your calculator to find each angle measure to the nearest. The default unit is degree () Calculate missing parts of a triangle. bullet Using Trigonometric Functions to Find a Missing Angle Find x, to the nearest degree. . . Find each angle measure to the nearest degree calculator - Find each angle measure to the nearest degree. X=48.99916333 degrees, use a trig calculator that has inverse functions. .5 = 1/2 which is the sin30, a common angle in trig. Find the unknown measures. . The measures of the angles of a triangle are x+2, x+4, and 2x+10. Table of Conversion 1 degree = 60 minutes 1 minute = 60 seconds 1 degree = 3600 seconds Example: Convert 12.456 degrees into degrees, minutes and seconds We'll explore quick and easy ways how to Find each angle measure to the nearest degree calculator in this blog post. Using Trigonometry to Find Angle Measures Date_____ Period____ Find each angle measure to the nearest degree. There are a few things to consider when determining math tasks. Also each of these. Free trigonometry calculator - calculate trignometric equations, prove identities and evaluate functions step-by-step. Those numbers are degrees. It even has an option to show steps if you pay but i was wondering if tou guys make that free for us to understand math better. This trig degree calculator finds the value of any trigonometric function for any angle in degrees or radians. B= sin (0.4848)=29 Find the. When the PLANAR method is used for the method parameter, the angle will be within the range of -180 to 180, with 0 to the east, 90 to the north, 180 (or -180) to the west, and -90 to the south. Many thanks to the creator, i love this app, this helps me on my homework so much, I've tried so many other calculators but this one is the best out there I swear, it even shows you the steps on how to get the answer you got, this is my most recommended for anyone who's struggling with math. Very easy to use, you just have to take a photo of an equation, it automatically focuses the camera. a =. If you're struggling with a problem and need some help, our expert tutors will be available to give you an answer in real-time. Find the measure of the indicated angle to the nearest degree. Date________________. The angle is 63.91 degrees, approximately 64 degrees. Our right triangle side and angle calculator displays missing sides and angles! Meet the law of sines and cosines at our law of cosines calculator and law of sines calculator! Also .454 is close to .5. Solution : The formula to calculate the center angle of a circle is given by: = 360L/2r Where, r is the radius of the circle Theta is the angle in degrees. Trigonometry Calculator - Right Triangles. Example. The theorem states that *interior angles of a triangle add to 180180\degree180: How do we know that? This app helps me a lot in any of my maths problem and even any of my problems dealing with numbers I like this app. To finish the problem, however, it will be necessary to use a calculator function referred to as an "inverse function" to find the actual number of degrees in the angle. Easy to use and type in problems, i am 67 so it's been a while since I've had to use algebra and granddaughter doesn't have a good teacher, i have been gets straight A. X=48.99916333 degrees, use a trig calculator that has inverse functions. Use a scientific calculator to find the angle measure in each of the following. The app is amazing, and it doesn't force you to use stupid ads, it has great and easy to use functions. Algebra 2 transformations of parent functions worksheet, Find the center and vertices of the ellipse calculator, Finding sides of a triangle with only angles, Fractions and decimals class 7 explanation, How to calculate absolute difference in java, How to find equation of horizontal asymptote, How to find r in a infinite geometric series, Solving linear equations distributive property assignment. This video provides examples of determining the measure of an angle of a right triangle with the length of two side given. A link to the app was sent to your phone. An angle is measured in either degrees or radians. Find each angle measure to the nearest degree. If you have a question, we have an answer! The following calculator will convert angles between degrees and radians. Got tricky homework or class assignments? SOH CAH TOA feb 29H a) sin X = 0.1636. 7 ft 39 34 & $ % 15. I cannot stress enough on how much I love this app/website. ,-EF 7.9 ft m 6.0 ftN 33 For Exercises 16 and 17, substitute numbers into the Law of Cosines to find each measure. Very helpful when checking my work for mistakes, however, personally I use this to further my knowledge of math and as a guide through more complex problems than I am familiar with. Best of all, Determine the measure of angle a to the nearest degree calculator is free to use, so there's no sense not to give it a try! Find the measure of the indicated angle to the nearest degree. Select 3 of these elements and type in data. Round to the nearest tenth. 1) sin B = 0.4848. A=27.00061091 degrees or 27 rounded off. If you're struggling with arithmetic, there's help available online. Math can be a difficult subject for many people, but there are ways to make it easier. Convert to radian, degree, minutes, seconds, sign, octant, sextant, Convert units of angles by entering the value to convert and the from and to units. For example 45.12 The small circle after the number means "degrees". Prior to this app, I had to use Google to help my kids with Math. Notice that in this problem, the x is INSIDE the. Below you'll also find the explanation of fundamental laws concerning triangle angles: triangle angle sum theorem, triangle exterior angle theorem, and angle bisector theorem. Find each angle measure to the nearest degree. Find each angle measure to the nearest degree. Convert Angles from Decimal to Degrees, Minutes and Seconds An online calculator to convert angles from decimal degrees to degrees, minutes and seconds using the table of conversion below. A railroad curve forms cos-1(0.72) 2x 1.5x 1x, selected 0.5x. Free trigonometry calculator - calculate trignometric equations, prove identities and evaluate functions step-by-step. VIDEO ANSWER: we're going to use a calculator to find the inverse tangent of one, and that means we're finding the angle. 8 degrees is in the right range for the solution. Measure of an angle In geometry, an angle. \( \sin ^{-1}(0.20) \) 11. Choose an expert and meet online. Math can be tricky, but there's always a way to find the answer. Find each angle measure to the nearest degree. 14. Given that sin(theta)=0.9465 and theta is acute, find angle theta and round the answer to the nearest tenth of a degree. c =. \( \cos ^{-1}(0.30) \) Show transcribed image text. Check out 18 similar triangle calculators , Surface Area of a Rectangular Pyramid Calculator, Sum of angles in a triangle - Triangle angle sum theorem, Exterior angles of a triangle - Triangle exterior angle theorem, Angle bisector of a triangle - Angle bisector theorem, Finding missing angles in triangles - example, As you know, the sum of angles in a triangle is equal to. 68 8) 19 27? More sleep more happy i am. Take some tips from us and learn How to find an angle measure to the nearest degree. cos A = 0.7431, How many questions do you need to pass the algebra 1 eoc, How to multiply two numbers with different signs, Numerical ability questions and answers for bank exam, Parallelogram area and perimeter formulas, Second derivative test multivariable calculator, Simultaneous equations graphically solver, Solutions upper intermediate workbook key, Solving a word problem using a 3x3 system of linear equations: problem type 1, Website that does math word problems for you, Worksheet wave properties and math answers. There's an infinite number of solutions to each of these problems. cos-1(0.72) 2x 1.5x 1x, selected 0.5x. Step-by-step explanation: Rounded to nearest degree means we have to round the final answer in the nearest degree. On your calculator, the inverse trig functions will appear as S I N 1, C O S 1, or T A N 1. Degrees and radians. Dividing both sides of the equation by 57.29578 we get. Because i usually stay back in school cause of cca and i usually reach home at like, 6. The protractor has two 'scales' marked from 0 to 180 degrees on both the ends. To draw a 360 angle, we calculate that 360 360 = 1. Find the solution of the initial value problem calculator, How do u find domain and range of a function, How to check if a number is a perfect square, How to find the unknown length of a triangle, Quadratic equations in vertex form worksheet answers, Solving systems of linear equations algebraically quiz level h, Which of the following system of equations is consistent and dependent. They can help improve your problem solving skills and help you to think more logically. Find each angle measure to the nearest degree. The ratio of the BD\overline{BD}BD length to the DC\overline{DC}DC length is equal to the ratio of the length of side AB\overline{AB}AB to the length of side AC\overline{AC}AC: OK, so let's practice what we just read. How to find the measure of the indicated angle to the nearest degree? cosY= .736 Y=42.60821753 = 43 degrees rounded off. Another way to view X is sin45 is a common angle whose sine is sq2/2 = 0.707. That's why ++=180\alpha + \beta+ \gamma = 180\degree++=180. So degrees and radians are related by the following equations: Now we just need to find that area. My suggestion is to watch snowboarding on the winter X-games and hear the commentators carefully for numbers. Read on to understand how the calculator works, and give it a go - finding missing angles in triangles has never been easier! 1) sin B = 0.4848. 1) sin Z = 0.4848 3) sin Y = 0.6561 2) sin Y = 0.6293 4) cos Y = 0.6157 . Solve math tasks Better than just an app, Better provides a suite of tools to help you manage your life and get more done. 1 Answer CW Jun 12, 2017 #43^@, 45^@, 92^@# Explanation: In a triangle, the . Question: Use your calculator to find each angle measures (in degrees): round to the nearest degree. Domain and range of graphs worksheet answer key, Find a formula for the inverse of the function calculator, Find all six trigonometric functions calculator, Find the angle 0 between the vectors calculator, How do i calculate statistical significance, Solve for u x y and z in the given matrix equation, Teaching 8th grade math systems of equations, Walmart assessment test answers 2020 quizlet. Also each of these. First, think about the level of difficulty. Raymond B. 395+ PhD Experts 90% Recurring customers 65886 Happy Students Get Homework Help X=48.99916333 degrees, use a trig calculator that has inverse functions. Solving math equations can be challenging, but it's also a great way to improve your problem-solving skills. This math question is a great way to test your knowledge of basic algebra. It helps me so much because school is hard but if i need something explained done to the bone they got me, the only problem i have encountered is sometimes it wont show a graph for something that it obviously should but i can just use something else for that sort of thing if it does happen. arctan (2.0503) = 64 degrees. 1) sin B = 0.4848. B= sin (0.4848)=29 Find the measure of the indicated angle to the nearest degree. It is easy to use and such more. Find the measure of the indicated angle to the nearest degree. For the complementary angle, reverse the rise and run. Put the protractor above the line BC such that the midpoint of protractor is at point B. Find each angle measure to the nearest degree. Round to the nearest degree. A near angle measures direction of the line connecting an input feature to its nearest feature at their closest locations. There are many ways to improve your writing skills, but one of the most effective is to practice writing regularly. Have more time on your hobbies You can have more time for your hobbies by making small changes to your daily routine. 2) cos Z = 0.1219. Sometimes, all it takes is a change in perspective to see the answer clearly. Make sure, first off, that your calculator is in "degree" mode by hitting the "mode" button and making sure that the "degree" is highlighed and not the "radian". SOH CAH TOA feb 29H a) sin X = 0.1636. This app helps a lot on my math problems, its really helpful, if you know you suck at math or you just wanna confirm your answers, this app is the best way to go. A circle measures 360 degrees, or 2 2\pi 2 radians, whereas one radian equals 180 degrees. The classic trigonometry problem is to specify three of these six characteristics and find the other three. If told to find the least positive angle coterminal with 785 degrees you can use the following calculation process shown below. Answer: 22 degrees. Using Trigonometry to Find Angle Measures. Find each angle measure to the nearest degree- pls show work!! Our top experts are passionate about their work and committed to helping you succeed. SOH CAH TOA feb 29H a) sin X = 0.1636. 8.3--Solving Right Triangles Use your calculator to find each angle measure to the nearest degree: 1) sin-1 (0.72) 2) tan-1 (2.38) 3) cos-1 (0.29) 4) sin-1. . I truly love this app. Find each angle measure to the nearest degree Knowing that 1 radian = 57.29578 degrees we can now find the conversion factor for converting back. The calculator solves the triangle specified by three of its properties. Then hit "clear". B = 60 degrees. Looking for a way to get detailed, step-by-step solutions to your problems? Note that while tables give angle in degrees and its fractions, in scientific calculator, one has to choose whether angle is desired in degrees or in radians, and after keying in value of sinA, have to seek its inverse. Determine the surface area for a pyramid using the surface area of rectangular pyramid calculator. Another way to view X is sin45 is a common angle whose sine is sq2/2 = 0.707. Avg. answered 05/05/21. sinA = .4540, A=27.00061091 degrees or 27 rounded off. Use a calculator with an inverse sine function. Right Triangle Trigonometry - SohCahToa Answer (round to nearest degree): X = Calculate the value for x. How to find the measure of the indicated angle to the nearest degree? Find the length to the nearest inch of a circular arc of 11 degrees 48.3 minutes if the radius is 3200 feet. Math can be confusing, but there are ways to make it easier. Step 3: Reduce or simplify the fraction of if necessary. Learn math, check homework and study for upcoming tests and ACTs/SATs with the most used math learning app in the world! This will be the value for the second acute angle in the right triangle. Now we multiply that by (or its decimal equivalent 0.2) to find our sector area, which is 5.654867 meters squared. Solving math problems can be fun and rewarding! Next, consider what type of math is required. Who are the experts? Apps can be a great way to help students with their algebra. 43 is slightly less than 45, and .736 is slightly more than .707 If you drew a picture, a graph, it would make sense. Calculating the gcd of 315 and 180 [gcd (315,180)], we've found that it equals 45. I can't believe I have to scan my math problem just to get it checked. The following is the calculation formula for the area of a sector: Where: A = area of a sector. .7547 is slightly more than .707, so X is slightly more than 45 degrees. Clear up mathematic question. Use your calculator to find each angle measure to the nearest degree. Also .454 is close to .5. . Expert instructors will give you an answer in real-time. At all questions one by one, which takes a lot of time. Make sure, first off, that your calculator is in degree mode by hitting the mode, Graphing linear inequalities in two variables, How to calculate to the power of on a basic calculator, How to find the solution set of a polynomial inequality, How to find zeros of a polynomial equation, How to write an algebraic expression in standard form, Implicit differentiation real life examples, Variable and verbal expressions answer key, What does the underlined word mean in the following sentence me gusta el postre en este restaurante. Simply click in the field inside the box and enter a value for the inches and fraction if necessary. This gives A=57.2035^o, which round to the . But use a calculator to get the more precise answer. Also each of these. Finding the Measure of an Angle: The unknown side of the triangle is evaluated by using the Pythagorean theorem. Step 3. You can input only integer numbers, decimals or fractions in this online calculator (-2.4, 5/7, .). Round lengths to the nearest . If you want to get the best homework answers, you need to ask the right questions. Experts are tested by Chegg as specialists in their subject area. As a student I highly recommend this app. L = Arc length = Angle in degrees r = 2m L = 4m = 360 4 /2 2 = 114.6 How do you find the measure of each angle? The app explains the answers and process down to its simplest form, great app Sir. Find the measure of the indicated angle to the nearest degree. 1/7 of 45 is about 6 1/2 degrees. This is fantastic for my College Algebra class, love to solve maths in it But here's a problem it can't bring up commons in pairs that would make calculations easier and it can't solve quadratic type equations. Round to the nearest degree. If you're struggling with a math problem, scanning it for key information can help you solve it more quickly. b =. For Free. 1) tan A = 2.0503 64 2) cos Z = 0.1219 83 3) tan Y = 0.6494 33 4) sin U = 209+ Consultants 9/10 Ratings Alternatively, if the angle is unknown, but the lengths of the two sides of a right angle triangle are known, calculating the cotangent is just a matter of dividing the adjacent by the opposite side. 49 looks about right. An angle bisector of a triangle angle divides the opposite side into two segments that are proportional to the other two triangle sides. Trigonometry Calculator - Right Triangles. Determine the measure of angle a to the nearest degree calculator - This Determine the measure of angle a to the nearest degree calculator helps to quickly and . The area can be found by the formula A = r2. More in-depth information read at these rules. To find an angle coterminal to another you can do so by simply adding or subtracting any multiple of 360 degrees or 2 pi radians. Using Trigonometry to Find Angle Measures. Right triangle trigonometry relates the sides of a right triangle to theangle measures of the two acute angles. Math is a subject that can be difficult for some students to grasp. then add +n360 to that where n= any integer. Circumference divided by diameter calculator, Common difference in arithmetic sequence calculator, Simultaneous equations with three variables, The use of math equations for child support. Helpful good job. Make sure, first off, that your calculator is in degree mode by hitting the mode 795 Consultants 5 Years in business Determine the angle measure to the nearest degree. To convert degrees to radians, first convert the number of degrees, minutes, and seconds to decimal form. If the given an angle in radians (3.5 radians) then you need to convert it into degrees: 1 radian = 57.29 degree so 3.5*57.28=200.48 degrees; Now you need to add 360 degrees to find an angle that will be coterminal with the original angle: Positive coterminal angle: 200.48+360 = 560.48 degrees. Find each angle measure to the nearest degree. Since cos () = b/c, from this definition it follows that the cosine of any angle is always less than or equal to one, and it can take negative values. Right Angle Triangle Calculator. radian measure = (315 )/180. It has every solution I need, but you have to pay to be able to view the steps, super simple, super helpful, easiest A possible. Find each angle measure to the nearest degree. Super easy to use and does not ask for money, shows the steps clearly and is easy to understand. Finally, think about how much time you have to complete the task. A small angle might be around 30 degrees. We are here to help you with whatever you need. Approved by, Learn to find the missing angles for a triangle using inverse trig functions · Math Antics - Rounding · Maths Tutorial: Trigonometry Law of Sines. 1) sin B = 0.4848. You may choose radians (rad) or degrees () as the angle unit. An exterior angle is supplementary to its adjacent triangle interior angle. Use your calculator to find each angle measure to the nearest degree. But use a calculator to get the more precise answer. cos-1(0.72) 2x 1.5x 1x, selected 0.5x. Our clients say Nothing really to . 1) tan A=2.0503 To use this calculator, just type a value for the angle, then press 'Calculate'. Divide the number of minutes by 60 and add, Find the angle measure to the nearest degree. 45 9) 34 55 Dividing both sides of the equation by 57. . Find the measure of each angle indicated. We do that by dividing the angle measure in degrees by 360. Find each angle measure to the nearest degree. Find the measure of the indicated angle to the nearest degree. Our online tools will provide quick answers to your calculation and conversion needs. Solving math problems can be a fun and rewarding experience. B= sin (0.4848)=29 Find the measure of the indicated angle to the nearest degree. They are equal to the ones we calculated manually: \beta = 51.06\degree = 51.06, \gamma = 98.94\degree = 98.94; additionally, the tool determined the last side length: c = 17.78\ \mathrm {in} c = 17.78 in. some have another answer as well. Math is a subject that many students find difficult. example 2: ex 2: Convert 385 degrees to radians. Step 2: Rearrange the terms: radian measure = 315/180. example 3: ex 3: Convert 2 radians to degrees. I will keep using it in future hopefully it keeps giving me detailed instructions on every step of the question. 1) tan A = 2.0503. Our fast delivery service ensures that you'll get your order as quickly as possible. Round to the nearest degree. The angle in degrees is equal to the angle in radians times 180 degrees divided by pi constant: (degrees) = (radians) 180 / . or. you get 15, 30, 60, and 75 degree angles, so approximate which of these the angle is closest to. Using Trigonometry to Find Angle Measures. x ) = Type r to input square roots . findangle1. Mathematics is a way of dealing with tasks that require e#xact and precise solutions. Look at the picture: the angles denoted with the same Greek letters are congruent because they are alternate interior angles. The full solution can be found here: [Link]. Find each angle measure to the nearest degree. Learn how to measure an angle with a protractor. Use a scientific calculator to find the angle measure in each of the following. Enter all known variables (sides a, b and c angles A and B) into the text boxes. Question 1: Find the central angle of a circle of radius 2m with an arc length of 4m? How to do that? Ads aren't a big deal bc they don't show up often, also I would like to say "Buy the premium version of This app, then you will able to know solution of a question step by step with explainations" it's better than trial version, esp if you're doing quadratic problems. Also .454 is close to .5. . Math can be a difficult subject for many people, but it doesn't have to be! Our team of experts can provide you with a full solution that will help you achieve success. One way is to clear up the equations. 101% using this in the future, 11/10 would recommend. In order to get a step by step every time, you do need a subscription, but free to generally use. This is sooooo helpful for my Math subjects. This is the only restriction when it comes to building a triangle from a given set of angles. tatianakukunova 11 years ago So, the terminal side will be one-fourth of the way around the circle, moving counterclockwise from the positive x-axis. If you're struggling with math, there's no shame in getting calculation help online. The inverse functions, on the graphing calculator, for each of the three trigonometric functions are found directly above the buttons for sine, cosine and tangent. 1) tan A = 2.0503. Use your calculator to find each angle measure to the nearest degree. 32 is close to 30. tan30 = 1/sqr3 = 0.577 32 is a little more than 30, so tan32 is a little more than tan30. If tan (A) = 2.0503, find the measure of angle A.If you know the tangent of an angle (A), you can find the angle (A) by taking the arctan of 2.0503 using your calculator. Triangle angle calculator is a safe bet if you want to know how to find the angle of a triangle. Dislike Share That definitely rounds to 49 for nearest degree. Quadrilaterals Calculator Calculate area, perimeter, diagonals, sides and angles for quadrilaterals step-by-step General Trapezoid Isosceles Trapezoid Parallelogram Rhombus Rectangle Square Related Symbolab blog posts Practice Makes Perfect Learning math takes practice, lots of practice. given a,b,: If the angle isn't between the given sides, you can use the law of sines. Using Trigonometry to Find Angle Measures. sin B = 0.7245 Video Answer Solved by verified expert Ryan H. Numerade Educator Like View Text Answer Textbook Answer Official textbook answer See Answer with our 7-days Free Trial Video by Ryan Hood Numerade Educator This textbook answer is only visible when subscribed! Use a scientific calculator to find the angle measure in each of the following. If you're having trouble understanding a math question, try clarifying it by rephrasing it in your own words. Math can be tough, but with a little practice, anyone can master it! 90 360 = 1 4. .6239 is a little more than .577, any tangent less than 1 is less than 45 degrees. From the theorem about sum of angles in a triangle, we calculate that. Sum of three angles \alpha \beta, \gamma is equal to 180180\degree180, as they form a straight line. Find: exact solutions (default) an approximate solution 7 cm 5 cm 50. .1405 is about 1/7 of 1. This app is an actual life saver, you have made math easier for me, and I remember the problems, explains all the steps and why they took them. I like how you can use the camera. Has gotten me through some problems. 1) tan A = 2.0503. You can find websites that offer step-by-step explanations of various concepts, as well as online calculators and other tools to help you practice. An exterior angle of a triangle is equal to the sum of the opposite interior angles. Follow the steps given below to measure the angle. If you want to improve your theoretical performance, you need to put in the work. answered 05/05/21, Mathematics Teacher - NCLB Highly Qualified. There are several ways to find the angles in a triangle, depending on what is given: Use the formulas transformed from the law of cosines: If the angle is between the given sides, you can directly use the law of cosines to find the unknown third side, and then use the formulas above to find the missing angles, e.g. X=48.99916333 degrees, use a trig calculator that has inverse functions.