# Ellipse described with little information

Geometry Level pending

Let $$S$$ be the focus of an ellipse.Let the latus rectum of the ellipse through $$S$$ intersect the ellipse at $$P$$ and $$Q$$.Tangents to the ellipse at points $$P$$ and $$Q$$ intersect at a point $$R$$.

Given that $$\angle QRP = 60^\circ$$ , find the eccentricity of the ellipse.