Let $\mathrm{C}$ be the centre of an ellipse and $\mathrm{PQ}$ be a chord of it with…
Let $\mathrm{C}$ be the centre of an ellipse and $\mathrm{PQ}$ be a chord of it with $\lfloor\mathrm{PCQ}=90^{\circ}$. If $\mathrm{R}$ is the point of intersection of the tangents to the ellipse at $P$ and $Q$ then $R$ lies on