Question

Choose an inverse function and use SohCahToa to find angle A.

Answer 1

`m\angle A=53.13^o`

Explanation:

we know that

In the right triangle of the figure

The cosine of angle A is equal to divide the adjacent side to angle A by the hypotenuse

so

`cos(A)=(6)/(10)` ----> by CAH

Find the measure of the angle A

`m\angle A=cos^(-1)((6)/(10))`

`m\angle A=53.13^o`