If ` x cot^2 120^@ + 4 sin^2 150^@ = 3`, then x =

If xtan^(2) 120^(@) + 4 cos^(2) 150^(@) = 9 then x =

What is the value of (4//3) cot^2 (pi//6) + 3 cos^2 (150^@) - 4 cosec^2 45^@ + 8 sin (pi//2) ?

What is the value of (4//3) cot^2(pi//6) + 3cos^2(150^@) - 4 cosec^2 45^@+8 sin (pi//2) ?

sin ^ (2) (120 ^ (@) + x) -sin ^ (2) (120 ^ (@) - x) in [- (n) / (2), (n) / (2)] rArr n =

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

Solve : (i) cos 3theta + 8 cos^(3) theta = 0 (ii) "tan" (pi cot x) = cot (pi tan x) (iii) 4 cos^(2) x sin x-2 "sin"^(2) x = 3 sin x

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

( cos 4x + cos 3x + cos 2x )/( sin 4x + sin 3x + sin 2x) = cot3x

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

If sin^(4)x + sin^(2) x =1 , then the value of cot^(4)x + cot^(2)x is: