Question

Which one of the following functions is equivalent to sin (-35º)? A. sin 35º B. -sin 35º C. -sin 55º D. sin 55º

Answer 1

The values of the given options are as follows:
Sin [-35] = 0.4281.
Sin 35 = - 0.4281
- Sin 35 = 0.4281
- Sin 55 = 0.9997
Sin 55 = - 0.9997.
Therefore, the correct option is B. 

Answer 2

Sin(-x) is equal to - sin(x)

Therefore, sin(-35) = -sin 35

Your answer is B.