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find the value of: `intsqrt(1-sin2x)`dx

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find the value of: `intsqrt(1-sin2x)`dx
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`I = int sqrt(1-sin2x) dx`
`=>I = int sqrt(cos^2x+sin^2x-2sinxcosx) dx`
`=>I = int sqrt((cosx-sinx)^2) dx`
`=>I = int (cosx-sinx) dx`
`=> I = sinx + cosx +c`
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