A triangle PQR PQR\,PQR represents the layout of a park. The length of path PQ PQ\,PQ is 25 m and the length of path PR PR\,PR is 18 m. The angle between the two paths at point P P\,P is 40∘40^\circ40∘.
Work out the distance between Q Q\,Q and RRR.
Give your answer to 1 decimal place.
36 exam-style questions on OCR GCSE Maths The Cosine Rule. Each one has a worked solution and a mark scheme showing where the marks go.