Answer:
67.98°
Step-by-step explanation:
This problem deals with trigonometric ratios, this one specifically deals with the inverse of Cosine because it provides the measure of the side adjacent to the angle you are trying to find as well as the hypotenuse of the triangle. We will need to use the inverse of the cosine function to find the measure of angle A.
arccos(3/8) = A
A = 67.975
The measure of angle A is 67.98°
