1.

The value of the integral `int_(0)^(pi)(1-|sin 8x|)dx` is

Answer» Correct Answer - C
`I=int_(0)^(pi)1-|sin 8x|dx`
`= pi-int_(0)^(pi)(x|sin 8x|)dx`
`= pi-int_(0)^(8.(8)/(pi))(x|sin 8x|)dx`
`= pi-int_(0)^((8)/(pi))xsin 8xdx`
`=pi-8 [(- cos 8x)/(8)]^((pi)/(8)) `
`P+(-1-phi)=pi-2`


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