`intcos^3x/(sin^2x+sinx)dx`

intcos^3x/(sin^4x)dx=?

intcos^3x/sqrt (sinx)dx

int(cosx)/(3sin^2x-4sinx+1)dx=

int(cos^3x+cos^5x)/(sin^2x+sin^4x)dx= (A) sinx-6tan^-1(sinx)+c (B) sinx-2(sinx)^-1-6tan^-1(sinx)+c (C) sin^-1x-2(sinx)^-1+5tan^-1(sinx)+c (D) none of these

Evaluate: int(cosx)/(sin^2x+4sinx+5)\ dx

int(cosx)/(sqrt(sin^2x-sinx-3))dx=

intcosx/sqrt(sin^2x+3sinx+4)dx

int(sin^3x+cos^3x)/(sin^2xcos^2x)dx (A) sinx+cosx+c (B) tanx+cotx+c (C) secx-cosecx+c (D) sinx-cosx+c