A triangle is shown with two sides of lengths 13 cm and 10 cm. The angle between these two sides is 100∘100^\circ100∘. The third side of the triangle is labeled x x\,x cm.
Work out the value of xxx.
Give your answer to 1 decimal place.
The Cosine Rule Questions
Practise Edexcel GCSE Maths The Cosine Rule with exam-style questions for Foundation and Higher tier. 44 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.