Locus of Points with Constant Angle

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This Demonstration plots the points for which line segments drawn from two fixed points on the axis have angle . The locus consists of the arcs of two circles, with centers that move along the axis as you vary . For , the arcs are semicircles and the locus is a circle.

Contributed by: Mark Rosno (December 2012)
Open content licensed under CC BY-NC-SA




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