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Math Help - Prove that ((1+sin(15x))(1-sin(x))/(1-sin(5 x))(1+sin(3x)))= ....

  1. #1
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    Prove that ((1+sin(15x))(1-sin(x))/(1-sin(5 x))(1+sin(3x)))= ....

    ((1+sin(15x))(1-sin(x))/(1-sin(5 x))(1+sin(3x)))=

    {16(sinx)^4 - 8(sinx)^3 - 16(sinx)^2 + 8sinx +1}^2


    Any idea that help in solving this equality is appreciated.
    Last edited by mr fantastic; March 23rd 2011 at 03:47 AM. Reason: Re-titled.
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  2. #2
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    I don't know the whole solution yet but start on the left hand side with \displaystyle \frac{a}{b}\div \frac{c}{d}= \frac{a}{b}\times  \frac{d}{c}

    What do you get?
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