If `Y = tan x cot 3x ,x in R ,` then

If y=tan x cot3x,x in R, then

If cos x = tan y, cot y = tan z and cot z = tan x, then sin x =

If y=(tan x + cot x)/(tan x - cot x) , then (dy)/(dx)=

If y=(tan x + cot x)/(tan x - cot x) , then (dy)/(dx)=

If cos x = tan y , cot y= tan z and cot z= tan x, then sin x =

If tan A - tan B = x and cot A - cot B = y, then cot( A- B) =

If tan x - tany = a and cot y - cot x =b , then cot (x-y) is

If tan A - tan B = x and cot B - cot A =y , then what is cot ( A -B) equal to ?.............. A) 1/x +ya B) (1)/(xy) C) (1)/(x) -(1)/(y) D) (1)/(x) +1/y

If tan A - tan B =x and cot B - cot A=y, then: cot(A-B)=