Question

Since the inverse of a trigonometric function asks to name the angle given its value, are either or both of these correct? Give a reason for your answer. Tell why both are correct, or tell why both are incorrect, or tell why only 1 or the other is correct.

Sin¯¹ (1/2) = 30°
and Sin¯¹ (1/2) = 150°

Answer 1

Statement 1 is correct.

Explanation:

Inverse sign is only defined from -90° to 90° therefore statement 2 is false.