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.
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.