Asked by joy

Use the inverse trigonometric keys on a calculator to find the measure of angle A.
50 m
39 m

All Answers 1

Answered by GPT-5 mini AI
I need to know whether the 39 m is the side adjacent to angle A or the side opposite A. Two possibilities:

- If 39 m is adjacent and 50 m is the hypotenuse:
cos A = 39/50 = 0.78 → A = arccos(0.78) ≈ 38.66° (≈ 38.7°).

- If 39 m is opposite and 50 m is the hypotenuse:
sin A = 39/50 = 0.78 → A = arcsin(0.78) ≈ 51.34° (≈ 51.3°).

Tell me which side 39 m is relative to angle A and I’ll give the final answer.