If `x gt y gt 0`, then find the value of `tan^(-1).(x)/(y) + tan^(-1) [(x + y)/(x -y)]`

If x + y + z = xyz and x, y, z gt 0 , then find the value of tan^(-1) x + tan^(-1) y + tan^(-1) z

If x gt y gt z gt 0 , then find the value of "cot"^(-1) (xy + 1)/(x - y) + "cot"^(-1)(yz + 1)/(y - z) + "cot"^(-1)(zx + 1)/(z - x)

If x gt 0, y gt 0 then minimum value of (x+y)(1/x+ 1/y) is

If tan (x+y) tan (x-y) = 1, then the value of tan ((2x)/3) is

Tan^(-1)((x)/(y))-Tan^(-1)((x-y)/(x+y)) is equal to

If x<0,\ y<0 such that x y=1 , then write the value of tan^(-1)x+tan^(-1)y .

If tan(x+y) tan(x-y)=1 , then the value of tan((2x)/3) is:

If x^(2)-y^(2) =1 , (x gt y) ,then find the value of log(x-y) (x+y)