`int (2sin 2phi-cos phi)/(6-cos^2 phi-4 sin phi) d phi`

Find int( (3 sin phi-2) cosphi)/(5-cos ^2 phi-4 sin phi) d phi

int((3sin phi-2)cos phi)/(5-cos phi-4sin phi)d phi

int((3sin phi-2)backslash cos phi)/(5-cos^(2)phi-4sin phi)backslash d phi

(3 cos phi+cos 3 phi)/(3 sin phi-sin 3 phi)=

Prove: (sin phi - cos phi) ^(2) =1 - sin 2 phi.

If a sin phi+b cos phi=c then a cos phi-b sin phi is

The product of matrices A = [(cos^(2) theta, cos theta sin theta),(cos theta sin theta , sin^(2) theta)] and sin B = [(cos^(2)phi, cos phi sin phi),(cos phi sin phi, sin^(2) phi)] is a null matrix if theta - phi =