# Math Help - modifying slash simplifying trigonometric expression

1. ## 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

2. ## Re: modifying slash simplifying trigonometric expression

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