`" (3) "int(dx)/(cos^(2)x)`

int(dx)/(3+2cos^(2)x)

int(dx)/(2-3cos2x)

int(dx)/(3-2cos2x)=

int(dx)/(3cos2x+5)=

int(dx)/(3+4cos2x)=

(3) int dx/cos^2x

Evaluate : (i) int(dx)/((1+3sin^(2)x)) (ii) int(dx)/((3+2cos^(2)x))

(i) int(cos^(3) x+ sin^(3) x)/(sin^(2) x.cos ^(2) x)dx " "(ii) int(cos2x)/(cos^(2) x sin^(2)x) dx

int (2-3 sin x)/(cos^(2) x) dx

Find the following integrals: ( i ) int(sin x+cos x)dx( ii) int cos ecx(cos ecx+cos x)dx( iii) int(1-sin x)/(cos^(2)x)dx