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The Cosine Rule

The Cosine Rule

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Question 6
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The diagram shows triangle PQRPQRPQR. Side PR=8.4PR = 8.4PR=8.4 km, side QR=10.5QR = 10.5QR=10.5 km, and the angle at vertex R R\,R is 52∘52^\circ52∘. The side PQ PQ\,PQ is labeled d d\,d km.

Triangle PQR with side PR = 8.4 km, side QR = 10.5 km, angle R = 52 degrees, and side PQ = d km.

Work out the value of ddd. Give your answer to 3 significant figures.

[3]
Markscheme

The Cosine Rule Questions

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

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

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