If `A-B=pi/4quad y=(1+tan A)(1-tan B)` then value of `(y)^(y+1)=`

If A+B=(pi)/(4), then (tan A+1)(tan B+1) equals

13.If y=(1+tan A)(1-tan B), where A-B=(pi)/(4) then (y+1)^(y+1) is equal to

If y=(1+tan A)(1-tan B), where A-B=(pi)/(4), then (y+1)^(y+1) is equal to 9 (b) 4(c)27(d)81

If tan^(-1)x+tan^(-1)y+tan^(-1)z=(pi)/(4) and x+y+z=1 then the value of (x^(5)+y^(5)+z^(5)) is equal to (1) Zero (2)-1 (3) 1 (4)2

If x+y=pi//4 and tan x+tan y=1 , then (n in Z)

Ify = (1 + tan.4) (1-tan B), where AB = (pi) / (4) (y + 1) ^ (y + 1) i sequalt

If (x)/(a)-(y)/(b) tan theta =1 and (x)/(a) tan theta +(y)/(b)=1 , then the value of (x^(2))/(a^(2))+(y^(2))/(b^(2)) is

If y=log sqrt(tan x), then the value of (dy)/(dx) at x=(pi)/(4) is given by oo(b)1(c)0(d)(1)/(2)