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

Explanation

`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`