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Math Help - Trigo-equation

  1. #1
    Super Member dhiab's Avatar
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    Trigo-equation

    Solve in R:

    \left (cosx  \right )^{11}-\left ( sinx \right )^{11}=1
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  2. #2
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    Re: Trigo-equation

    the obvious solutions are

    (cosx=0 ,sinx=-1) and (cosx=1 and sinx=0)
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