1.

Let A(2sec theta, 3 tan theta ) and B( 2sec phi ,3 tan phi ) where theta + phi =(pi)/(2)be two point 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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