A surveyor measures a triangular field ABCABCABC. He finds that side BC=15 mBC = 15\text{ m}BC=15 m and side AB=8 mAB = 8\text{ m}AB=8 m. The angle BAC BAC\,BAC is 30∘30^\circ30∘.
Work out the size of angle BCABCABCA, labeled xxx. Give your answer to 3 significant figures.
Practise Edexcel GCSE Maths The Sine Rule with exam-style questions for Foundation and Higher tier. 39 questions, matched to the Edexcel GCSE Maths (1MA1) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.