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Cosine rule
The Cosine rule finds the missing side of a triangle when you know the length of the other two sides and the angle between them.
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Sine Rule, Cosine Rule and Triangle Area Rule Revision Quiz
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Online Revision for GCSE Higher Students
24th May 2017
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GCSE Maths Higher Revision Workbook
12th May 2017
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Don't Miss Our Online GCSE Maths Revision Tutorials...
13th April 2017