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Thread: Trigonometry Identities Proving

  1. #1
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    Trigonometry Identities Proving

    Prove that SinA/1-CotA + Cos A/1 - Tan A = CosA + Sin A
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  2. #2
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    Re: Trigonometry Identities Proving

    Prove that SinA/(1-CotA) + Cos A/(1 - Tan A) = CosA + Sin A
    in future, use (grouping symbols) to make your expressions clear

    working from the left side ...

    start by multiplying the first term by $\dfrac{\sin{A}}{\sin{A}}$ and the second term by $\dfrac{\cos{A}}{\cos{A}}$
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