the normal chord of the parabola y^2=4ax T(x1,x1)subtends a right angle at the (a) focus (b) vertex (c) end of latus rectum (d) none of these
the normal chord of the parabola y^2=4ax T(x1,x1)subtends a right angle at the (a) focus (b) vertex (c) end of latus rectum (d) none of these