Statement -1: If `2"sin"2x - "cos" 2x=1, x ne (2n+1) (pi)/(2), n in Z, "then sin" 2x + "cos" 2x = 5`
Statement-2: `"sin"2x + "cos"2x = (1+2"tan" x - "tan"^(2)x)/(1+"tan"^(2)x)`

If f (tan x) = cos 2x , x != (2n + 1) pi/2, n in I then incorrect statement is

If f (tan x) = cos 2x , x != (2n + 1) pi/2, n in I then incorrect statement is

If x ne (n pi)/(2), n in Z " and "("cos"x)^("sin"^2 x-3 "sin" x + 2) = 1 " Then," x =

If x ne (n pi)/(2), n in Z " and "("cos"x)^("sin"^2 x-3 "sin" x + 2) = 1 " Then," x =

(sin2x)/(1+cos2x)=tan x

Assertion (A) : if 2sin^(2)((pi)/(2)cos^(2)x)=1-cos(pisin2x) , xne(2n+1)(pi)/(2),n is a integer, then sin2x+cos2x=(1)/(5) Reason (R ) : sin2x+cos2x=(2-(tanx-1)^(2))/(1+tan^(2)x) . Then the true statement among the following is

If 2 sin^(2) ((pi//2) cos^(2) x)=1-cos (pi sin 2x), x ne (2n + 1) pi//2, n in I , then cos 2x is equal to