Question

How does sin 30° compare to sin -30°?

a. they are both negative
b. sin 30° is positive and sin -30° is negative
C. they are both positive
d. none of the above

Answer 1

B
Because yes and because I am the smart !

Answer 2

b.

Explanation:

sin 30 = 1/2

sin (-30) = -1/2.

30 degrees is in quadrant I where the sine is positive and -30 degrees is in quadrant IV where the sine is negative.