Question

70 points!!!!!!!!!!!!
Find the sin, cosine, and tangent of angle A. Give your answers as fractions in simplest forms.

Answer 1

Find BC

AC^2=AB^2+BC^2

20^2=16^2+BC^2

400=256+BC^2

BC=√(400-356)

BC=12

Use SOHCAHTOA

Sine A=12/20=3/5

COS A=16/20 =4/5

TAN A=12/16 =3/4