" 16."cos x+sin x=1

cos x cos 2x cos 4x cos 8x =(sin 16x)/(16sin x)

2cosx-cos3x-cos5x= ............... A) 16 cos ^(3) x sin ^(2) x B) 16 sin^(2) x cos ^(2) x C) 4 cos ^(2) x sin ^(2) x D) 4 sin ^(2) x cos ^(2)x

(cos x)/(1-sin x)=(1+cos x+sin x)/(1+cos x-sin x)

if a=(1+sin x)/(1-cos x+sin x) then (1+cos x+sin x)/(2sin x) is

1- (sin ^ (2) x) / (1 + cos x) + (1 + cos x) / (sin x) - (sin x) / (1-cos x) =

If sin x+cos x=1+sin x.cos x then x=

Solve sin x+cos x=1 +sin x cos x

If y = |{:(sin x , cos x , sin x),(cos x,-sin x, cos x),(x, 1, 1):}| , then (dy)/(dx) is