Question

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

Answer 1

Answer:

$m\angle A=53.13^o$

Step-by-step 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

$cos(A)=\frac{6}{10}$ ----> by CAH

Find the measure of the angle A

$m\angle A=cos^{-1}(\frac{6}{10})$

$m\angle A=53.13^o$