Question

If the sin 30° = , then which statement is true?
Select one:
a. cos 150° = 0 because the cosine and sine are supplements
b. cos 60° = because the cosine and sine are complements
c. cos 150° = 1 because the cosine and sine are supplements
d. cos 60° = 0 because the cosine and sine are complements

Answer 1

Sin 30 deg=?

Answer 2

sin 30 = 1/2

Answer 3

Probably the problem showed 1/2 as a character which did not copy/paste, leaving a blank spot...

Answer 4

Assuming that you take standard value of sin(30) which is 1/2 answer would be b because all the other options cannot be true. sin and cos are complements. That is cos(90-theta)=sin(theta) or vice-versa. To make this simple remember that the angles of sin and cos should together make 90 deg.

Answer 5

cosine 60 = 1/2

Answer 6

b. is the answer @savvvvannahh

Answer 7

Yes where it said sin 30 degrees = 1/2 was supposed to be there. I copied it heehe :3 But B is still the answer? @sayakdbz @silversurfer

Answer 8

yes indeed @savvvvannahh