1.

Evaluate the following integrals: `int(x)/((1+sinx))dx`

Answer» Correct Answer - `-xtan((pi)/(4)-(x)/(2))+2log|cos((pi)/(4)-(x)/(2))|+C`
`I=int(x)/(1+cos((pi)/(2)-x))dx=(1)/(2)intxsec^(2)((pi)/(4)-(x)/(2))dx`


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