Answer:
38°
Explanation:
For ∠A, 9 is the adjacent leg, and 7 is the opposite leg.
The trig ratio that relates the opposite leg and the adjacent leg is the tangent ratio.
tan A = opp/adj
tan A = 7/9
A = tan^-1 (7/9)
(Recall: tan^-1 x means the inverse tangent of x.)
A = tan^-1 0.777777
Take the inverse tangent of 0.7777.
A = 37.8749...°
Answer: 38°