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Thread: prove....again hard [cos(2pie-x)sin(pie+x)tan(pie-x)]/[csc(pie/2-x)sec(pie/2+x)xcot(3

  1. February 7th 2013, 07:42 PM #1
    kaokaokao
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    prove....again hard [cos(2pie-x)sin(pie+x)tan(pie-x)]/[csc(pie/2-x)sec(pie/2+x)xcot(3

    [cos(2pie-x)sin(pie+x)tan(pie-x)]/[csc(pie/2-x)sec(pie/2+x)xcot(3pie/2-x) = cos^4x-cos^2x


    prove two sides equal....
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  2. February 7th 2013, 09:03 PM #2
    ibdutt
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    Re: prove....again hard [cos(2pie-x)sin(pie+x)tan(pie-x)]/[csc(pie/2-x)sec(pie/2+x)xc

    prove....again hard [cos(2pie-x)sin(pie+x)tan(pie-x)]/[csc(pie/2-x)sec(pie/2+x)xcot(3-trig.png
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