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File:Equilateral chord.svg


The earliest trigonometry was based on chords of a circle.

A chord of length equal to the radius made a natural base quantity for measuring angles. Using the standard Babylonian sexagesimal divisions, one sixtieth of this defined a degree; while six su

Description Equilateral chord of a circle
Date 10 October 2007
Source Own work using Inkscape
Author Jheald


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