SOLUTION: Can you help me prove this trigonometic identity?: (sinƟcosƟ)/(cos^2Ɵ-sin^2Ɵ)=tanƟ/(1-tan^2Ɵ)

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Question 730721: Can you help me prove this trigonometic identity?:
(sinƟcosƟ)/(cos^2Ɵ-sin^2Ɵ)=tanƟ/(1-tan^2Ɵ)

Answer by lynnlo(4176) About Me  (Show Source):