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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Check out these related videos about trigonometry:
• Tangents of Pi/8 and 3... (tangents of 22.5 degrees and 67.5 degrees)
• Tangent 75 and tangent... (tangents of 15 and 75 degrees)
• Half Angle Tangent For... (half angle tangent formula that you can use to get this result)
• A Five Pi Diagram (pi ... (arctangents)
This animation is based on a visual proof from Brian Bradie in the September 2002 issue of The College Mathematics Journal ( www.jstor.org/... page 318--319)
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14 окт 2024