Question
( int frac{cos x(1-cos x) d x}{sin ^{2} x} )
( intleft(frac{cos x}{sin ^{2} x}-cot ^{2} xright) d x )
( intleft(cot x operatorname{cosec} x-cot ^{2} xright) d x )
( -operatorname{sesec} x+1-operatorname{cosec}^{2} x )
( sec operatorname{cosec} x+1-operatorname{cosec}^{3} x )

at procose de J tit cosxe
Solution
