## anonymous 3 years ago is the sin120 degrees -1/2?

1. anonymous

$\sin 120=\sin (180-60)=\sin 60=\sqrt {3}$

2. anonymous

/2

3. anonymous

just remember that on the unit circle, sin is your y-coordinate cos is your x-coordinate.

4. anonymous

Still on the top-half of the unit circle, so sin is positive there...

5. anonymous

is this a complete question

6. anonymous

what is it looking for

7. anonymous

it's basically a yes/no question...

8. anonymous

it just said find each trigonometric ratio and gave me sin120.

9. anonymous

oh i see, so since sin is the y axis, it would be sqrrt3/2

10. anonymous

correct... sin is the y-coordinate, not the y axis...