SOLUTION: What point on the unit circle responds to -4pi/3?

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?
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Reference angle is pi/3
-4pi/3 is in QII where cos is negative and sin is positive.
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Ans: (x,y) = (-cos(pi/3),sin(pi/3)
(x,y) = (-1/2 , sqrt(3)/2))
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Cheers,
Stan H.
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