Cosine Law | grade 10 math | jensenmath.ca
Learn how to use Cosine law to: 1) Solve for a side when you know 2 sides and the angle contained by the 2 known sides 2) Solve for an angle when you know all 3 sides Go to jensenmath.ca for supporting materials 0:00 - intro 1:30 - proof of cosine law 7:36 - example 1 finding side lengths 11:02 - example 2 finding an angle 15:55 - example 3 solving a triangle

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