If perpendiculars are drawn on any tangent to a parabola y2 = 4ax from the points (a+k,0) and (a-k,0) on the axis of parabola, the difference of their squares is?
a) 4 b) 4a c)4k d)4ak
If perpendiculars are drawn on any tangent to a parabola y2 = 4ax from the points (a+k,0) and (a-k,0) on the axis of parabola, the difference of their squares is?
a) 4 b) 4a c)4k d)4ak
a) 4 b) 4a c)4k d)4ak