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Homework Help: How to integrate sinx/(1+sinx)

  1. Jul 3, 2012 #1
    1. The problem statement, all variables and given/known data
    As stated in the title.

    2. Relevant equations
    No equations

    3. The attempt at a solution
    Honestly, I'm stuck. I have no idea where to go. My only thought is to multiply the top and bottom by sinx but where would that get me?
  2. jcsd
  3. Jul 4, 2012 #2
    I agree you should multiply the denominator and numerator by some quantity. As a hint, it might be useful to consider that [itex]1-\sin^2x=\cos^2 x[/itex].
  4. Jul 4, 2012 #3
    Yes, I did that, and am confused where to go from there.
  5. Jul 4, 2012 #4
    Multiple the top and bottom by sin2x
  6. Jul 4, 2012 #5
    Solved it. Multiplied the top and bottom by the Pythagorean Conjugate.
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