3. The length of double ordinate of parabola `y^2 = 8x` which subtends an angle `60^@` at vertex is

The length or double ordinate of parabola , y^(2) = 8x which subtends an angle 60^(@) at vertex is

The length or double ordinate of parabola , y^(2) = 8x which subtends an angle 60^(@) at vertex is

The length of normal chord of parabola y^(2)=4x , which subtends an angle of 90^(@) at the vertex is :

Prove that a double ordinate of the parabola y^2=4ax of length 8a subtends a right angle at its vertex.

Find the locus of the middle points of the chords of the parabola y^2=4a x which subtend a right angle at the vertex of the parabola.

Find the locus of the middle points of the chords of the parabola y^2=4a x which subtend a right angle at the vertex of the parabola.

Find the locus of the middle points of the chords of the parabola y^2=4a x which subtend a right angle at the vertex of the parabola.

Find the locus of the middle points of the chords of the parabola y^2=4a x which subtend a right angle at the vertex of the parabola.

Find the locus of the middle points of the chords of the parabola y^2=4a x which subtend a right angle at the vertex of the parabola.