Flashcards for Edexcel AS Level Maths Trigonometric Ratios, covering the key formulae, methods and definitions you need to recall for Paper 1 and Paper 2. 3 cards drawn from 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 AS Level Maths (8MA0) specification.