Posted by tanya on Friday, May 3, 2013 at 11:58am.

secθ cscθ - cotθ secθ cscθ - cosθ cscθ (secθ-cosθ) cscθ (1-cos^2θ)/cosθ cscθ sin^2θ/cosθ cscθ sinθ/cosθ tanθ