Let P(asecθ, btanθ) and Q(asecɸ, btanɸ) where θ + ɸ = be two points on the hyperbola . If (h, k) be the point of intersection of the normals at P and Q then k is equal to
a)
b)
c)
d)
Your Answer
be two points on the hyperbola 
. If (h, k) be the point of intersection of the normals at P and Q then k is equal to
