1.

If 12sinx+5cosx=2y^(2)-8y+21, to get values of x and y is

Answer»

`x = 2 n pi + cos ^(-1) ((5)/(13)), n in Z, y = 2`
`x = 2 n pi + sin ^(-1) ((5)/( 13)) , n in Z, y = 2`
`x = 2 n pi + TAN ^(-1) ((5)/( 13)) , n in Z, y = 2`
`x = 2 n pi + cos^(-1) ((5)/( 13)) , n in Z, y = 1`

Answer :A


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