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Math Help - modifying slash simplifying trigonometric expression

  1. #1
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    modifying slash simplifying trigonometric expression

    I have an expression on the form

    Code:
    a*sin(w)3 + b*sin(w) 
    --------------------    (1) 
    c*cos(w)3 + d*cos(w)
    a,b,c,d are constants different from 0. It should be possible to put it on the form

    Code:
    p*tan(w) - q*tan(w)^3 
    ----------------------  (2) 
    1 - r*tan(w)^2
    
    where p,q,r are constants. Can anyone see how this can be done (if possible)?

    Br
    niaren
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  2. #2
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    Re: modifying slash simplifying trigonometric expression

    I finally found out myself by working backwards from (2) to (1)!
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