Solving Right Triangles

Question

Solve the right triangle. Round decimal answers to the nearest tenth.

AB = ___, m angle A ≈ ___∘, m angle B ≈ ___∘

Answer 1

CB^2 + CA^2 = AB^2. Plug in CD = 12 and CA = 9 to solve for AB (answer will be 15)

cos(A) = 9/12, A = cos-1(9/12) = 41.41

sin(A) = 9/12, B = sin-1(9/12) = 48.59