" (iii) "cos4x=cos2x

cos 4x=cos 2x

cos 4x = cos 2x

cos 4x = cos 2x

cos 4x = cos 2x

cos 4x = cos 2x

Evaluate: (i) int(sinx+2cosx)/(2sinx+cosx)\ dx (ii) int(cos4x-cos2x)/(sin4x-sin2x)\ dx

If cos x=t a n x , then which of the following is true? (a) 1/(sinx)+cos^4x=1 (b) 1/(sinx)+cos^4x=2 (c) cos^(54)x+cos^2x=1 (d) cos^4x+cos^2x=2

Solve: cos4x=cos2x

Solve: cos4x=cos2x