A map shows three landmarks forming a triangle. The distances between the landmarks are 6 km, 9 km, and 5 km. The angle between the 6 km and 9 km sides is x∘x^\circx∘.
Work out the value of xxx.
Give your answer to 3 significant figures.
Practise OCR GCSE Maths The Cosine Rule with exam-style questions for Foundation and Higher tier. 44 questions, matched to the OCR GCSE Maths (J560) specification and written in the written papers 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.