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Math Help - Trigonometry

  1. #1
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    Exclamation Trigonometry

    Prove
    TanA/(1- cotA) + Cot A / (1- tanA ) = 1 + tan A + Cot A
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  2. #2
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    Quote Originally Posted by prantik007 View Post
    Prove
    TanA/(1- cotA) + Cot A / (1- tanA ) = 1 + tan A + Cot A
    = tanA/( 1 - 1/tanA) + 1/tanA*tan(1-tanA)
    = tan^2(A)/(tanA - 1) - 1/tanA(tanA-1)
    = [tan^3(A) - 1]/tanA*(tanA-1)
    Factorize the numerator and simplify to get the result.
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  3. #3
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    Can someone let me know for this
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  4. #4
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    Quote Originally Posted by martingoldstein View Post
    Can someone let me know for this
    What do you want to know about this problem?
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