URGENT: Normalization

Discussion in 'Homework Help' started by ihaveaquestion, Nov 8, 2011.

  1. ihaveaquestion

    Thread Starter Active Member

    May 1, 2009
    314
    0
    Can someone please explain how the solution goes from the third from the last line to the 4th from the last line (where the cos^2 term is first introduced)?

    I sort of need the answer asap, thanks a lot
     
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  2. Peytonator

    Active Member

    Jun 30, 2008
    105
    3
    Do you mean how to get from cos to cos^2? If so, use the identity

    1+cos(2A) = 2*cos^2(A)

    where 2A = beta*d*cos(theta)
     
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