The Cosine Rule | GCSE Maths
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YouTubeJP Maths Revision
The Cosine Rule | GCSE Maths
Learn how to use the cosine rule to calculate missing sides and angles in non-right-angled triangles. This GCSE Maths lesson explains when to use the cosine rule, how it links to Pythagoras, and how to solve exam-style questions step by step. This video covers: Using the cosine rule to find a side Using the cosine rule to find an angle ...
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