" 2."cos3x

int cos x cos 2x cos 3x dx=

1+ cos 2x+ cos4x + cos 6x= ............. A) 2 cos x cos 2x cos 3x B) 4 sin x cos 2x cos 3x C) 4 cos x cos 2x cos 3x D) 2 sin x cos 2x cos 3x

Differentiate cosx.cos2x.cos3x

The range of the function f(x)=1/(2-"cos" 3x) is

Solve for x : 2cos3x-1=0

Solve for x : 2cos(3x-15^(@))=1

If 3cosx + 2cos3x=cosy , 3sinx + 2sin3x =siny , then cos2x equals

Evaluate the following integrals: intcosx cos 2x cos3x dx