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

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

/2

3. dpaInc

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

4. ZeHanz

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

is this a complete question

what is it looking for

7. dpaInc

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

8. ihatealgebrasomuch

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

9. ihatealgebrasomuch

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

10. dpaInc

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