A triangle ABC ABC\,ABC is shown with side lengths AB=5 mAB = 5\text{ m}AB=5 m, BC=9 mBC = 9\text{ m}BC=9 m, and AC=10 mAC = 10\text{ m}AC=10 m. The angle at vertex B B\,B is labeled ABCABCABC.
Work out the size of angle ABC ABC\,ABC
Give your answer to the nearest degree.
The Cosine Rule Questions
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.