1.

Let A(2 sec theta,3 tan theta) and B (2 sec phi 3 tan phi ) where theta+phi=(pi)/(2), be two points on the hyperbola (x^2)/(4)-(y^2)/(9)=1 If (alpha, beta) is the point of intersection of normals to the hyperbola at A and B, then beta=

Answer»

`(-13)/(3)`
`(13)/(3)`
`(3)/(13)`
`(-3)/(13)`

ANSWER :A


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