SOLUTION: Determine cos2x if sin^4 = 25/60 in the first quadrant

SOLUTION: Determine cos2x if sin^4 = 25/60 in the first quadrant

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Question 1063392: Determine cos2x if sin^4 = 25/60 in the first quadrant
Answer by ikleyn(52835) (Show Source): You can put this solution on YOUR website!
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