In triangle LMNLMNLMN, the side LM LM\,LM is 7 cm and the side LN LN\,LN is 10 cm. The angle MLN MLN\,MLN is 55∘55^\circ55∘.
Work out the length of the side MNMNMN.
Give your answer to 1 decimal place.
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.