A double ordinate of the parabola `y^(2) = 4 ax ` is of length 8a . Prove that the lines joining the vertex to its two ends are at right angles .

A double ordinate of the parabola y^(2) = 4ax is of length 8a. Prove that the lines from the vertex to its two ends are at right angles.

A double ordinate of the parabola y^2=4ax is of length 8a. Prove that the lines from the Vertex to its two ends are at right angles.

If the length of the double ordinate of a parabola y^2=4ax is 8a.Prove that the line joining the vertex to its two ends are at right angle.

A double ordinate of the curve y^(2)=4ax is of lengh 8a. Prove that the line from the vertex its ends are at right angles.

A double ordinate of the curve y^(2)=4ax is of lengh 8a. Prove that the line from the vertex its ends are at right angles.

A double ordinate of the parabola y^(2)=8px is of length 16p. The angle subtended by it at the vertex of the parabola is

A double ordinate of the parabola y^(2)=8ax of length 16a the angle subtended by it at the vertex of the parabola is

If the double ordinate of the parabola y^(2)=8x is of length 16 then the angle subtended by it at the vertex of the parabola is

For the parabola y^(2)=4px find the extremities of a double ordinate of length 8p. Prove that the lines from the vertex to its extremities are at right angles.