1.

The values of x, between 0 and 2 pi, satisfying the equaion cos 3 x + cos 2 x = sin""(3x)/(2) + sin ""(x)/(2) are

Answer»

`(PI)/(7)`
`(5 pi)/(7)`
`(9 pi)/(7)`
`(13 pi)/(7)`

Answer :A::B::C::D


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