15 tan A =14 find 2sin A cos A /cos square A - sin square A

1.	15 tan A =14 find 2sin A cos A /cos square A - sin square A
Answer» 15tanA=14tanA =14/15tan2A=2tan2A/1-tan2A=2*(14/15)/(1-225/196)tan2A=28/15/29/225=420/29=======================================Now 2sinAcosA/cos2A-sin2A=sin2A/cosA=tan2A=420/29

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