SOLUTION: if sinA = 3/5, find cos2A

Question 972529: if sinA = 3/5, find cos2A
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
if sinA = 3/5, find cos2A
cos2A=1-2sin^2A
cos2A=1-9/25
cos2A=16/25
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