" 1."int(cos2x)/(cos^(2)x*sin^(2)x)dx=

(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

(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

Evaluate : (i) int((4-5 cosx)/(sin^(2)x))dx , (ii) int((1-cos2x)/(1+cos2x)) dx (iii) int (1)/(sin^(2)x cos^(2)x) dx , (iv) int(cos2x)/(cos^(2)x sin^(2) x) dx

int(cos2x)/(sin^(2)xcos^(2)x)dx=

int(cos2x)/((cos x+sin x)^(2))dx

int(1)/(cos2x+sin^(2)x)dx=

int(1)/(cos2x+sin^(2)x)dx

int(cos 2x-sin 2x)/(cos2x+sin2x)dx

int(cos2x)/(sin x)dx