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Math Help - Double angle question

  1. #1
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    Double angle question

    If tanA*tan2A =1,then the value of sin^2 2A + tan^2 2A is equal to

    a)3/4

    b) 10/3

    c)3 and 3/4

    d)3
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  2. #2
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    Re: Double angle question

    Double angle question-17-jun-13-2.png
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