1.

Let C : x^(2) -3, D : y = kx^(2) be two parabolas and L_(1) : x a , L_(2) : x = 1 (a ne 0) be two straight lines. If a gt 0, the angle subtended by the chord AB at the vertex of the parabola C is

Answer»

`tan^(-1)((5)/(7))`
`tan^(-1)((5)/(2))`
`tan^(-1)(2)`
`tan^(-1)((1)/(8))`

ANSWER :B


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