A surveyor measures the distances between three markers, AAA, BBB, and CCC, placed on a plot of land. The distance AB AB\,AB is 6.4 m, the distance BC BC\,BC is 5.5 m, and the distance AC AC\,AC is 8.1 m.
Work out the size of angle BACBACBAC.
Give your answer to 3 significant figures.
Practise Edexcel GCSE Maths The Cosine Rule with exam-style questions for Foundation and Higher tier. 41 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.
