" 11."(i)(tan x)/(1-cot x)+(cot x)/(1-tan x)=1+tan x+cot x

(tan x)/(1-cot x)-(cot x)/(1-tan x)=(sec x cos(x+1))

( cot x)/( cot x- cot 3x)+ ( tan x)/( tan x- tan 3x)=

tan^(-1) (cot x) +cot^(-1)(tan x) =

differentiate (tan x)^(cot x)+(cot x)^(tan x)

If tan(cot x) = cot (tan x) , then sin 2x =

If sin x=(-3)/(11) ,the value of (1-cot x)/(1+tan x)+(1+cot x)/(1-tan x) can be expressed as (a)/(b) ,where a and b are coprime positive integers,then value of a+b is

tan^(-1)(cot x)+cot^(-1)(tan x)

tan^(-1) (cot x) +cot^(-1)(tan x) =pi -2x