y=sin4x cos7x

If y= (sinx+cosx)+(sin4x+cos4x)^(2) , then :

If sin^(4)x+cos^(4)y+2=4sin x cos y then the value of sin x+cos y is equal to

Find the period of (|sin4x|+|cos4x|)/(|sin4x-cos4 x|+|sin4x+cos4x|)

Find the period of (|sin4x|+|cos4x|)/(|sin4x-cos4 x|+|sin4x+cos4x|)

Period of function f(x)=(sin7x+sin3x)/(cos7x+cos3x) is

lim_(x rarr0)(log(sin7x+cos7x))/(sin3x) equals.

Prove that (cos3x)/(sin2x sin4x)+(cos5x)/(sin4x sin6x)+(cos7x)/(sin6x sin8x)+(cos9x)/(sin8x sin10x)=(1)/(2)(cos ecx)[cos ec2x-cos ec10x]

prove that (cos7x+cos5x)/(sin7x-sin5x)= cotx