1.

The statement (3 sin ^(4) x - 2 cos ^(6) x + y - 2 in ^(6) x + 3 cos ^(4) x) ^(2) = 9 is ture for

Answer»

`x = (5 PI)/(13) and y = 2`
`x = (7 pi)/( 16) and y = - 4 `
`x = (pi)/(7) and y = 1 `
`x = (pi)/(5) and y = - 1`

Answer :A::B


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