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int (sin theta+cos theta)/sqrt(1+sin2 th...

`int (sin theta+cos theta)/sqrt(1+sin2 theta) d theta`

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`int(sintheta+costheta)/sqrt(1+sin2theta)d theta`
`int(sintheta+costheta)/sqrt(sin^2theta+cos^2theta+2sinthetacostheta)d theta`
`int(sintheta+costheta)/sqrt((sintheta+costheta)^2) d theta`
`int(sintheta+costheta)/(sintheta+costheta)d theta`
`int1d theta`
`theta+C`.
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