A variable chord t1 t2 of the parabola y2 = 4ax subtends a right angle at a fixed point t0 of the curve.
Show that it passes through a fixed point. Also find the coordinates of the fixed point.
A variable chord t1 t2 of the parabola y2 = 4ax subtends a right angle at a fixed point t0 of the curve.
Show that it passes through a fixed point. Also find the coordinates of the fixed point.










