In triangle ABCABCABC, AB=12 cmAB = 12 \text{ cm}AB=12 cm and angle B=40∘B = 40^\circB=40∘
Given AC=10 cmAC = 10 \text{ cm}AC=10 cm, find the two possible values for angle CCC, correct to 1 decimal place.
Given instead that the area of the triangle is 752 cm275\sqrt{2} \text{ cm}^2752 cm2, find BCBCBC.
Practise Edexcel A Level Maths Trigonometric Ratios with exam-style questions for A Level Maths. 20 questions covering 9.1 The Cosine Rule, 9.2 The Sine Rule, 9.3 Areas of Triangles, 9.4 Solving Triangle Problems, 9.5 Graphs of Sine, Cosine and Tangent, and 9.6 Transforming Trigonometric Graphs, matched to the Edexcel A Level Maths (9MA0) 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.
