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The Cosine Rule

The Cosine Rule

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Question 23

In a triangle XYZXYZXYZ, the length of side XY XY\,XY is 9.4 km and the length of side XZ XZ\,XZ is 13.1 km. The angle at X X\,X is 48∘48^\circ48∘.

Work out the length of YZYZYZ.
Give your answer to 3 significant figures.

[3]
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The Cosine Rule Questions

  1. GCSE
  2. /Maths
  3. /The Cosine Rule

36 exam-style questions on AQA GCSE Maths The Cosine Rule. Each one has a worked solution and a mark scheme showing where the marks go.

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