Right Triangle Trig to Find Angle Measures

Find the measure of the indicated angle.

We can use SOH-CAH-TOA for...

• Any triangle ever

• Non-right triangles only

• Right Triangles only

• Never

To the nearest whole degree.

• 66^°

• 24^°

• 22^°

• ^37°

Solve the triangle. Round measures of sides to the nearest tenth and angles to the nearest degree.

• A

• B

• C

• D

Using trigonometric ratios, how can you find the measure of an angle in a right triangle if you know the lengths of the opposite side and the adjacent side?

• Sine

• Cosine

• Tangent

• Cotangent

From the given right triangle,

Find the value of angles M and N

M=​ ​ (a)  

N=​ (b)  

• 77.3°

• 12.7°

• 49.9°

• 40.1°

• 74.5°

• 15.5°

Find the measure of the indicated angle (?) round to the nearest tenth.

Mathematical Equivalence

ON

Solve the right triangle. Round measures of sides to the nearest hundredth and angles to the nearest degree.

• <B = 39^o, AB = 11.58, AC = 7.29

• <B = 39^o, AB = 7.29, AC = 11.58

• <B = 129^o, AB = 11.58, AC = 7.29

• <B = 129^o, AB = 7.29, AC = 11.58

Solve the right triangle.

• <A = 33.7^o, <C = 56.3^o, AC = 5.59

• <A = 56.3^o, <C = 33.7^o, AC = 5.59

• <A = 33.7^o, <C = 56.3^o, AC = 9.01

• <A = 56.3^o, <C = 33.7^o, AC = 9.01