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`(sin^(2)x)/(1+cosx)`

Answer» `int(sin^(2)x)/(1+cosx)dx=int(1-cos^(2)x)/(1+cosx)dx`
`=int((1-cosx)(1+cosx))/(1+cosx)dx`
`=int(1-cosx)dx`
`=x-sinx+c`


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