Example 1 - Circumcircle Radius

Example 1 - Circumcircle Radius

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Measure the area of a triangle with sides length a,b,c, and measure the radius of the circumcircle. 

 

What is their relationship?

If a triangle is defined in terms of two sides and the included angle, what is its area?

Hence you can derive a formula for the radius of the circumcircle which involves an angle: