`(tan22 5^(@)-cot8 1^(@)cot6 9^(@))/(cot26 1^(@)+tan2 1^(@))`

(1- tan 2 ^(@) cot 62^(@))/(tan 152^(@) -cot 88^(@))=

(1- tan 2 ^(@) cot 62^(@))/(tan 152^(@) -cot 88^(@))=

tan(9 0^(@)-cot^(- 1)1/3)=

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

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

tan^(-1)(cot x)-tan^(-1)(cot2x)=

If A= tan 15^(@) + cot 15^(@) , B= tan""22^(1^(@))/(2) + cot"" 22(1^(@))/(2) and C= sin 54^(@) - sin 18^(@) then the ascending order is

tan ^(-1) (cot x) + cot ^(-1) (tan x) =(pi)/(4)

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