Answer:
51.06
Explanation:
SOH CAH TOA
Sine = opposite/hypoteneuse
Cosine = adjacent/hypoteneuse
Tangent = opposite/adjacent
When looking for angles use the inverse function.
According to image you have the opposite of the angle and the hypotenuse
hypotenuse = 9
opposite = 7
using SOH we can find the angle: sin^-1(7/9) = 51.06