tan(A)/(2)=(sqrt((1-cos A)/(1+cos A)))

tan ""A/2 is equal to.............. A) sqrt((1- sin A)/( 1+ sin A)) B) sqrt((1+ sin A)/(1- sin A)) C) sqrt((1 -cos A)/(1 + cos A)) D) sqrt((1 +cos A)/(1- cos A))

tan ^(-1)(sqrt((1-cos 3 x)/(1+cos x)))

int tan^(-1)( sqrt((1-cos2x)/(1+cos2x)))dx

If y=tan^(-1)sqrt((1-cos x)/(1+cos x)), prove that (dy)/(dx)=(1)/(2)

(v) tan^(-1)sqrt((1+cos x)/(1-cos x))

Simplest form of tan^(-1)((sqrt(1+cos x)+sqrt(1-cos x))/(sqrt(1+cos x)-sqrt(1-cos x))), pi lt x lt (3 pi)/(2) is:

int tan^(-1) sqrt((1 - cos 2 x)/(1 + cos 2x)) dx . ……………. .

int tan^(-1) sqrt((1 - cos 2x)/( 1 + cos 2 x )) dx is