Answer:
A = 24.1°
Step-by-step explanation:
The side of length 16.8 is the opposite side of A and the side of length 37.6 is the adjacent side of A. Using the trigonometric function tangent, we get

Then, we can solve for A, so

Where we type the angle A with 3 significant digits because the measure of the angle is to the nearest 0.1°.
Therefore, the answer
A = 24.1°