SOLUTION: find the exact values of s in the given interval that satisfy the given condition. [-2pie,pi);cos^2s=3/4

Question 950428: find the exact values of s in the given interval that satisfy the given condition.
[-2pie,pi);cos^2s=3/4
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
find the exact values of s in the given interval that satisfy the given condition.
[-2pie,pi)
Comment:: That interval sound like QIV and QIII
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cos^2s=3/4
cos(s) = +-sqrt(3)/2
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Reference angle:: pi/3
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Ans: -pi/3 ; -(2/3)pi
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Cheers,
Stan H.
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