1.

If x = a is a solution of the equation sin^(-1)""x/3+sin^(-1)""(2x)/3=sin^(-1)x, then the roots of the equation x^(2)-ax-1=0 are

Answer»

`pm1`
`1/2, 1`
`PM 1/2`
`-1/2, 1`

ANSWER :A


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