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(sinθ/(1-cotθ)) + (cosθ/(1-tanθ)) = cosθ + sinθ

  1. Mar 8, 2012 #1
    1. The problem statement, all variables and given/known data
    I have to prove that:

    (sinθ/(1-cotθ)) + (cosθ/(1-tanθ)) = cosθ + sinθ


    2. Relevant equations



    3. The attempt at a solution
    Here's my attempt at solution...
    6gy26c.jpg
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Mar 8, 2012 #2
    Very close!
    a2 - b2 = ?
     
  4. Mar 8, 2012 #3
    OMG how unbelievably stupid of me...
    obviously (a - b)(a + b)

    thanks a lot bro... :D
     
  5. Mar 8, 2012 #4

    Mark44

    Staff: Mentor

    th4450,
    If you post a photo of your work in another thread,
    1) Take a better picture. This one was so dark it was barely legible.
    2) Shrink the image so that it is no larger than 800 x 600 pixels.
     
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