Exact Trig Values for Multiples of 18 Degrees Geometrically (visual proof)

Описание: This is a short, animated visual proof demonstrating how to compute the various exact trigonometric values for multiples of 18 degrees using the geometry of the Golden Triangle.

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This animation is based on a visual proof from Brian Bradie in the September 2002 issue of The College Mathematics Journal ( https://www.jstor.org/stable/1559057 page 318--319)

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