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Circles : Area of Inscribed Equilateral Triangle (some basic trig used)

By Sal Khan

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Book Id: WPLBN0002822968
Format Type: Video (Educational Video)
File Size:
Reproduction Date: 2012

Title: Circles : Area of Inscribed Equilateral Triangle (some basic trig used)  
Author: Sal Khan
Language: English
Subject: Math, Geometry, Circles
Collections: Educational Videos, Circles series
Publication Date:
Publisher: Khan Academy
Member Page: Khan Academy


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Khan, S. (n.d.). Circles : Area of Inscribed Equilateral Triangle (some basic trig used). Retrieved from

Problem that requires us to figure out the area of an equilateral triangle inscribed in a circle (A little trigonometry used)

This is a first year, high-school level course on Geometry (which is based on Euclid's elements). It revisits many of the basic geometrical concepts studied in earlier courses, but addresses them with more mathematical rigor. There is strong focus on prov

Table of Contents
area, equilateral, triangle, circumscribed, inscribed


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