Angles in Right Triangles

• cos⁻¹ (b/c) = arcsin (b/c) = θ

• sin⁻¹ (a/c) = arcsin (a/c) = θ

• tan⁻¹ (b/a) = arctan (b/a) = θ

Tip

• Create right triangles from a figure and find the side lengths. Then use sohcahtoa to find the angles.