Question

If the sin 30° is one half, then the cos ________° = ________.

60°; one half
30°; square root 2 over 2
60°; square root 3 over 2
30°; 1

Answer 1

The answer and most correct out of the options given is answer "A."

Explanation:

Took the test, the person above is right I can confirm. I know a lot of people want confirmation for these answers.

Answer 2

Explanation:

`sin(a) = cos(90 - a)`

60°= one half