The Law of Cosines

The Cosine Law
This lesson shows how to use the Cosine Law to find both sides and angles in triangles. Law of Cosines
Learn about Law of Cosines, a brief introduction Law of Cosines
Demo solving an oblique triangle using the Law of Cosines Comparing the sine law and cosine law
This video show students when they need to use the sine law and when they need to use the cosine law for finding the missing sides of non right triangles.

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