`int(sin^(6)x)/(cos^(8)x)dx=?`

Evaluate: int(sin^(4)x)/(cos^(8)x)dx

Evaluate int(sin^(4)x)/(cos^(8)x)dx

Evaluate: int(sin^(2)x)/(cos^(6)x)dx

" 6.Evaluate "int(sin^(4)x)/(Cos^(6)x)dx

Evaluate: int(sin^(6)x)/(cos x)dx

int(sin^(2)6x-cos^(2)7x)dx=

" (8) "int(sin x)/(cos^(2)x)dx

int(sin(x+a))/(cos(x-b))dx=

Find the following integrals: ( i ) int(sin x+cos x)dx( ii) int cos ecx(cos ecx+cos x)dx( iii) int(1-sin x)/(cos^(2)x)dx