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An equilateral triangle is inscribed in a circle of radius r. See the figure. Express the circumference

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An equilateral triangle is inscribed in a circle of radius r. See the figure. Express the circumference C of the circle as a function of the length x of a side of the triangle.

First show that r2 = x2/3.

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Precalculus

Precalculus

ISBN: 978-0321716835

9th edition

Authors: Michael Sullivan

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