`(sec2x-tan2x)` equals a) `tan(x-pi/4)` b)`tan(pi/4-x)` c)`cot(x-pi/4)` d)`tan^2(x+pi/4)`

Solve: tan(pi/4+x)+tan(pi/4-x)=2

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

int_(0)^( pi)|sin x|-|cos x||dx is equal to (a) tan((3 pi)/(8))( b) tan((pi)/(8))(c)4tan((pi)/(8))(d)2tan((3 pi)/(8))

tan^(-1)2x+tan^(-1)3x=(pi)/(4)

Prove that: tan(pi/4+A)+tan(pi/4-A) = 2sec2A

General solution of tan((pi)/(4)+x)+tan((pi)/(4)-x)=4 is

(tan(pi/4+x))/(tan(pi/4-x)) = ((1+tanx)/(1-tanx))^(2)

int e^(x)((2tan x)/(1+tan x)+cot^(2)(x+(pi)/(4)))dx is equal to e^(x)tan((pi)/(4)-x)+ce^(x)tan(x-(pi)/(4))+ce^(x)tan((3 pi)/(4)-x)+c(d) none of these

Solve the equation tan(x-(pi)/4)tanxtan(x+(pi)/4)=(4cos^2x)/(tan(x/2)-cot(x/2).