Give it a try, and check to see if you got the correct answer.As a member, you'll also get unlimited access to over 79,000 lessons in math, English, science, history, and more. It also allows us to solve any triangle for a missing side or angle. We use the parts that contain the information we have and the information that we need to find.
If two angles are given, add them together and then subtract from 180°.
If two angles are the same and unknown, subtract the known angle from 180° and then divide by 2.
That means that not only are two of the sides equal but two of the angles are also equal. Notice that this triangle gives an angle outside of the triangle.
Here is one method: Step 1: Determine the measure of the angle adjacent to 148°.
Here, we see we are given two sides, one angle, and we need to find another angle. Plugging in the information that we have, we get this - 4.7/sin A = 5.5/sin 63.
How To Solve Triangle Problems
Set up an equation using the sine, cosine or tangent ratio Since we want to know the length of the hypotenuse , and we already know the side opposite of the 53° angle, we are dealing with sine $$ sin(67) = \frac \ sin(67) = \frac $$ Now, just solve the Equation: Since we know 2 sides and 1 angle of this triangle, we can use either the Pythagorean theorem ( by making use of the two sides ) or use sohcahtoa (by making use of the angle and 1 of the given sides) Chose which way you want to solve this problem. The only thing you cannot use is sine, since the sine ratio does not involve the adjacent side, x, which we are trying to find.With respect to my angle, they've given me the "adjacent" and have asked for the "opposite", so I'll use the tangent ratio: Standardized Test Prep ACCUPLACER Math ACT Math ASVAB Math CBEST Math CHSPE Math CLEP Math COMPASS Math FTCE Math GED Math GMAT Math GRE Math MTEL Math NES Math PERT Math PRAXIS Math SAT Math TABE Math TEAS Math TSI Math more tests... The solution to this problem will be slightly different than the solution to the others. There are a couple of different ways you can use this information to determine the measure of angle h.Plus, get practice tests, quizzes, and personalized coaching to help you succeed. We also remember to set our calculator to degrees since we are working with degrees. The formula looks like this: The lower case letters stand for the sides of our triangle and the upper case letters stand for the corresponding opposite angles of those sides. In order to find a missing side, we need to know the measurement of the angle opposite our missing side along with the measurement of another angle with its opposite side.Try it risk-free After watching this video lesson, you will be able to use the law of sines to find a missing side of a triangle as well as a missing angle of a triangle. In order to find a missing angle, we need to know the measurement of its opposite side along with the measurement of another side with its opposite angle.Easy to use calculator to solve right triangle problems.Here you can enter two known sides or angles and calculate unknown side ,angle or area. Also remember, since we are working with degrees, we need to make sure our calculator is also set to degrees. We've learned that the law of sines tells us how the sides and angles of a triangle are related. So, let's see, we are given side b along with angle B and we are given side a. Again, using our awesome algebra skills to solve for our missing angle A, we get A = sin^-1 ((4.7 sin 63)/5.5). Remember, since we are looking for an angle, we need to take the inverse sine of our calculations to find our angle in degrees.The larger upper case letters refer to the corresponding angles of the triangle. We have over 200 college courses that prepare you to earn credit by exam that is accepted by over 1,500 colleges and universities.So, angle A is opposite side a, angle B is opposite side b, and angle C is opposite side c. You can test out of the first two years of college and save thousands off your degree.