Cosine Rule Explained - And Side Example Included - Part 1 - Viewer Video Request #1

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2 years ago
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maths mathematics triangles triangle gcse maths cosine rule gcse finding length of a triangle side math teach how to find the length of a triangle side

In this video I explain how to use the cosine rule and give an example of finding the side length of a triangle. In part 2 I will show an example of finding an angle value within a triangle. Thank you to our viewer for requesting this video!

Reference for image used:

Don Steward BlogSpot (Not Affiliated)

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