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Reflection Property of the Ellipse and the Hyperbola

by Michael K. Brozinsky (Queensborough Community College)

This article originally appeared in:
College Mathematics Journal
March, 1984

Subject classification(s): Geometry and Topology | Analytic Geometry
Applicable Course(s): 3.1 Mainstream Calculus I

A polar coordinate proof of the fact that the focal radii of an elipse (hyperbola) make equal angles with the tangent.

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