In right triangle ABC, sinA=5/13. Therefore, the measure of angle A, to the nearest tenth of a degree is_____ .

Answer 1

A more expected question here would have been:
if sinA = 5/13, what is the exact value of cosA or tanA or any of the other
trig ratios.
However, here
if sinA = 5/13
angle A = appr 22.6°

Do you not have a calculator?