JEE Main PAPER - 1

Tangent and normal are drawn at $P(16,16)$   on the parabola $y^2 = 16x$   which intersect the axis of the parabola at A and B, respectively. If C is the centre of the circle through the points P, A and B and $\angle CPB = \theta$  , then a value of $\tan \theta$   is: