What is measure of angle a?
enter your answer as a decimal in the box. round only your final answer to the nearest hundredth.

A = 53.13 degrees

Step-by-step explanation:

sin theta = opposite side/ hypotenuse

sin A = 4/5

Take the inverse of each side

sin ^-1 sin A = sin ^-1 (4/5)

A = 53.13010

To the nearest hundredth

A = 53.13 degrees

4a. is 3 miles every hour

4b. is 1/3 of an hour per mile

step-by-step explanation:

it has to have an angle of 90 degrees