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Law of Cosines

Law of Cosines

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Author: Catherine Neve
Description:

Use the Law of Cosines to find the side lengths and angle measures of a triangle.

Use Heron’s Formula to find the area of a triangle.

This video lesson will help you understand how to solve sides and angles of a triangle using the Law of Cosines.  You will also learn Heron's Law which you can use to find the area of a triangle.

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