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Math Help - Trig problem

  1. #1
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    Trig problem

    Can someone solve this problem ? I'm stuck ...


    tan^{2}36\times tan^{2}72=5
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  2. #2
    Super Member bigwave's Avatar
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     <br />
tan^{2}36\times tan^{2}72=5<br />

    ok cannot factor since it is x not +
    Last edited by bigwave; December 14th 2009 at 11:23 AM. Reason: corrected formula
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  3. #3
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    I dont think you can do that... how about :
    \left ( tan36\times tan72 \right )^{2}
    \left ( \frac{sin36\times sin72}{cos36\times cos72} \right )^{2}

    what about now ?
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  4. #4
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    I'm sorry for double posting but i can't return your PM.
    Isn't it the same as :
    \left ( xy \right )^{2}=x^{2}y^{2}
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