(cos x)/(2+cos x)

(1 + sin 2x + cos 2x )/( cos x + sin x ) = 2 cos x

int(cos x-cos2x)/(1-cos x)*dx

int(cos3x-cos2x)/(cos x)dx

Evaluate the integerals. int (sin x cos x)/(cos ^(2)x +3 cos x+2)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

int ( sin x cos x)/((cos^(2)x-cos x-2))dx

Evaluate the following integrals: int(2cos^2x-cos2x)/(cos^2x) dx

lim_(x rarr0)(sin^(2)4x+2cos^(2)x-2cos x)/(cos^(2)x-cos^(3)x)

int (sin x.cos x)/(cos^(2) x + 3 cos x + 2) dx =

lim_(x->0)(1-cos x-cos2x+cos x*cos2x)/(x^(4))