Question

If the sin 30° is 1 over 2, then the cos ____° = _____.

Answer 1

60° ; 1 over 2

30° ; square root 2 over 2

60° ; square root 3 over 2

30° ; 1

Answer 2

My guess is C.

Answer 3

I know
sin 30° 1/2 -> cos ?° ?/2

Answer 4

\[\sin(\theta) = \cos(90 - \theta)\]

Answer 5

So either A or C?

Answer 6

A? 30:60 1:2 ?
Am I right?

Answer 7

@iPwnBunnies

Answer 8

Yes. The sin30 degrees is 1/2. So is the cos60 degrees.

Answer 9

Thanks now I understand sin to cos.