" 43."sqrt((1-tan x)/(1+tan x))

If y = sqrt((1 + tan x)/(1 - tan x)) " then " (dy)/(dx)= ?

lim_(x rarr0)(sqrt(1+tan x)-sqrt(1-tan x))/(sin x)=

If y = tan^(-1) {(x)/(1 + sqrt(1 - x^(2)))} + sin { 2 tan^(-1) sqrt((1 - x)/(1 + x))}, "then" (dy)/(dx) =

Evaluate : int sqrt(tan x) (1+ tan^(2)x)dx

If tan^(-1) sqrt((1-sqrt(x))/(1+sqrt(x))) = (pi)/(4)-(alpha)/(2) , then express tan^(2)alpha in terms of x.

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

The value of (tan 47^(@) + tan 43^(@))/(1-tan 47^(@) tan 43^(@)) is