" (7) "(ardn)/(1+cos2x)

int(x)/(1+cos2x)dx

(i) int(1)/((1+cos2x))dx , (ii) int (1)/((1-cos2x)) dx

Evaluate: inte^(2x)\ ((1+sin2x)/(1+cos2x))\ dx

Find f'(x), if f(x)= tan^(-1) ""sqrt((1-cos2x)/(1+cos2x))

Evaluate the following integrals: (i) int((1-cos2x)/(1+cos2x))dx (ii) int((1+cos2x)/(1-cos2x))dx

Find the derivatives of "tan"^(-1) sqrt((1+cos2x)/(1-cos2x))

Evaluate: (i) int(tan x+cot x)^(2)dx (ii) int(1-cos2x)/(1+cos2x)dx

Statement 1:lim_(x rarr0)(sqrt(1-cos2x))/(x) does not existe.Statement 2:f(x)=(sqrt(1-cos2x))/(x) is not defined at x=0

1.lim_(x rarr0)(cos2x-1)/(cos x-1)(2).lim_(x rarr0)(1-cos2mx)/(1-cos2nx)