4,y+y^(2)=tan x+y

What is the value of {(sin 4x+ sin4y} [(tan 2x- 2y)]}//(sin 4x -sin4y) ? {(sin 4x+ sin4y} [(tan 2x- 2y)]}//(sin 4x -sin4y) का मान क्या है?

If tan^(2)z= tan (x+y) tan (x-y) , show that cot^(2)y+ cot (z+x) cot (z-x)=0

Prove that ,,(sin(x+y))/(sin(x-y))=(tan x+tan y)/(tan x-tan y)

Prove that: (sin(x+y))/(sin(x-y))=(tan x+tan y)/(tan x-tan y)

"If "e^(sin(x^(2)+y^(2)))=tan""(y^(2))/(4)+sin^(-1)x," then y'(0) can be "

sec^(2) y tan x dy + sec^(2) x tan y dx = 0 , " when " x =y = pi/4

Show that tan (x - y)+ tan (y - z) + tan (z- x) = tan (x - y) tan (y - z) tan (z- x)

Prove that : tan (x-y)+tan (y -z) + tan (z-x)= tan (x-y)tan (y -z) tan (z-x) .

tan(x+y)=(tan x+tan y)/(1-tan x tan y)