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Math Help - Verifying Trig Identities

  1. #1
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    Exclamation Verifying Trig Identities

    I need all the work shown. Please help!!! This is due tomorrow

    1. secx/sinx-sinx/cosx=cotx

    2. cos^4 x - sin^4 x = cos^2 x - sin^2 x

    3. tan^2 x/secx-1 = 1+ 1/cosx

    4.1+sinx/sinx = cot^2 x/csc x-1
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  2. #2
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    If it is due tomorrow, then you would have already attempted these.

    Can you show us this work?
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