Prove that the tangent at one extremity of the focal chord of a parabola is parallel to the normal at the other extremity.

Show that the tangents at the extremities of any focal chord of a parabola intersect at right angles at the directrix.

(1/2,2) is one extremity of a focal of chord of the parabola y^(2)=8x The coordinate of the other extremity is

If (-1,-2sqrt2) is one of exteremity of a focal chord of the parabola y^(2)=-8x, then the other extremity is

Prove that the tangents at the extremities of any chord make equal angles with the chord.

If " ((1)/(2),2) " is one extremity of a focal chord of parabola " y^(2)=8x " then other extremity is

If the tangents at the extremities of a focal chord of the parabola x^(2)=4ay meet the tangent at the vertex at points whose abcissac are x_(1) and x_(2) then x_(1)x_(2)=