Question

If the sin 0° = 0, then which statement is true?
Select one:
a. cos 90° = 1, because the cosine and sine are complements
b. cos 180° = 1, because the cosine and sine are supplements
c. cos 90° = 0, because the cosine and sine are complements
d. cos 180° = 0, because the cosine and sine are supplements

Answer 1

Is it C?