SOLUTION: prove double angles identity: 1-2sin^2A/1+2sinAcosA=1-tanA/1+tanA

SOLUTION: prove double angles identity: 1-2sin^2A/1+2sinAcosA=1-tanA/1+tanA

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Question 1110488: prove double angles identity: 1-2sin^2A/1+2sinAcosA=1-tanA/1+tanA
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
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