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Math Help - Simplifying trigonometric expressions part 2

  1. #1
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    Smile Simplifying trigonometric expressions part 2

    I need help with these problems....


    5.simplify cotxsinx/ cscxcosx

    6.sin(x+y) if cosx=2/5, and siny=3/4
    Last edited by mr fantastic; April 25th 2009 at 05:28 AM. Reason: Moved form original thread
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