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Brian McLogan
Area of Inscribed Equilateral Triangle of Circle | Can You Solve?
Area of Inscribed Equilateral Triangle of Circle | Can You Solve?
Khan Academy
Khan Academy: Geometry: Area of Inscribed Equilateral Triangle (Basic Trig Used)
Demonstrates how to find the area of an equilateral triangle inscribed in a circle by applying the area formula for a circle and Heron's formula. Some basic trigonometry (SOHCAHTOA) is also used. [11:38]