" (iii) "tan^(-1)(cos x)/(1-sin x)

tan^(-1)((1-cos x)/(sin x))

y=tan^(-1)(cos x/(1+sin x))

tan^(-1) ((1-cos x)/(sin x))

(b) tan^(-1)((1-cos x)/(sin x))

"Differentiate: "tan^(-1)((cos x)/(1+sin x))

prove that tan^(-1)((cos x)/(1-sin x))-cot^(-1)((sqrt(1+cos x))/(sqrt(1-cos x)))=(pi)/(4),x varepsilon(0,(pi)/(2))

tan^-1((1+cos x)/sin x)

tan^(-1)((sin x)/(1+cos x))

If y=tan^(-1) ((cos x)/(1-sin x)),"then " dy/dx=

if y=tan^(-1)((cos x)/(1+sin x)) then (dy)/(dx)