In triangle ABCABCABC, side AB AB\,AB has length 10cm, side BC BC\,BC has length 7cm and side AC AC\,AC has length 9cm.
Find the size of angle ABCABCABC.
Find the area of triangle ABCABCABC.
217 exam-style questions on Edexcel A Level Maths Trigonometric Ratios, 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. Each one has a worked solution and a mark scheme showing where the marks go.