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GCSE Maths

Geometry

The Sine and Cosine Rule

The Sine and Cosine Rule

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Level 7–8
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Key Points 

  • Sine Rule is used when you have an angle-opposite side pair.

  • Cosine Rule is used for non-right-angled triangles.

  • Choose the correct rule before calculating.


Keywords: sine rule, cosine rule, non-right-angled triangles, trigonometry, GCSE maths.

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