If `tan x + cot x =2` , then `sin^(2n)x + cos^(2n)`x is equal to

If tan x+cot x=2, thensin ^(2n)x+cos^(2n)x is equal to

If sec x cosec x = 2, then what is tan^(n) x + cot^(n)x equal to ?

If tan(cot x) = cot (tan x) , then sin 2x =

sin 2x (tan x + cot x) = ?

Prove that, cot x cos^(2)x -tan x sin^(2)x = 2 cot 2x

cot x cos^(2)x-tan x sin^(2)x=2cot2x

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

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