Question 944208: What point on the unit circle responds to -4pi/3?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! What point on the unit circle responds to -4pi/3?
-----
Reference angle is pi/3
-4pi/3 is in QII where cos is negative and sin is positive.
---
Ans: (x,y) = (-cos(pi/3),sin(pi/3)
(x,y) = (-1/2 , sqrt(3)/2))
=============
Cheers,
Stan H.
---------------------
|
|
|
