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Trigonometric identity

  1. Sep 17, 2012 #1
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    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Sep 18, 2012 #2

    rl.bhat

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    tanθ + sec - 1 = tanθ + secθ + tan2θ - sec2θ
    Factorise the last two terms and simplify.
    Substitute in the given problem and simplify.
     
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