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Math Help - Help with Trigonometric Identiy

  1. #1
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    Help with Trigonometric Identiy

    Hey can I get some help with this .

    If: A = 1+sin(x) / cos (x) then prove 1/A = 1-sin(x) / cos (x).

    Thanks !
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  2. #2
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    Re: Help with Trigonometric Identiy

    You didn't think to invert both fractions?
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  3. #3
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    Re: Help with Trigonometric Identiy

    Wouldn't an inversion of A give cos (x) / 1 + sin (x) which =/= 1-sin(x) / cos(x)
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  4. #4
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    Re: Help with Trigonometric Identiy

    That's just the first step. Now try multiplying top and bottom by the bottom's conjugate.
    Thanks from intex
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  5. #5
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    Re: Help with Trigonometric Identiy

    Ahhhhhhh. Thanks very much, I understand the concept now!
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