समाकलन ज्ञात कीजिए।
`(cos 2x)/((cos x + sin x)^(2))`

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

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

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

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

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

(sin x + cos x)^2 + (sin x - cos x)^2

Prove that (cos x + sin x)/(cos x - sin x) - (cos x - sin x)/(cos x + sin x) = 2 tan x

If f(x) = |{:( cos (2x) ,, cos ( 2x ) ,, sin ( 2x) ), ( - cos x,, cosx ,, - sin x ), ( sinx,, sin x,, cos x ):}| , then

If f(x) = |{:( cos (2x) ,, cos ( 2x ) ,, sin ( 2x) ), ( - cos x,, cosx ,, - sin x ), ( sinx,, sin x,, cos x ):}| , then

If f(x) = |{:( cos (2x) ,, cos ( 2x ) ,, sin ( 2x) ), ( - cos x,, cosx ,, - sin x ), ( sinx,, sin x,, cos x ):}| , then