Tangents from the points T to the ellipse x2-y2 equal 1 cut off a length equal to the minor axis from the tangent at (a,0). Prove that T lies on a parabola
Tangents from the points T to the ellipse x2-y2 equal 1 cut off a length equal to the minor axis from the tangent at (a,0). Prove that T lies on a parabola