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Math Help - Proving trigonometry

  1. September 10th 2012, 06:00 PM #1
    ZGOON
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    Proving trigonometry

    Cos@/(1+tan@) + sin@/(1-cot@) = sin@ + cos @


    Need help in this proving question! Please help
    Last edited by ZGOON; September 10th 2012 at 06:03 PM.
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  2. September 10th 2012, 07:57 PM #2
    MaxJasper
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    Lightbulb Re: Proving trigonometry

    Quote Originally Posted by ZGOON View Post
    Cos@/(1+tan@) + sin@/(1-cot@) = sin@ + cos @
    Need help in this proving question! Please help
    Sorry, not an identity but rather can be an equation with few points, i.e., only valid at certain points:



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