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Any suggestion on how to integrate this trig equation?

  1. Apr 30, 2010 #1
    I am absolutely stoned by this equation. I've looked through all the trig identities and the only one that comes close to be used in here is sin2u = 2sin(u)cos(u), but there is that lamba... Any suggestions?

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  2. jcsd
  3. Apr 30, 2010 #2

    D H

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    Staff Emeritus
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    The λ in that integral is just another constant, no different than 2.

    Hint: What is sin(a+b) + sin(a-b)?
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