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Sub-topics: 5.1 Review of the trigonometric ratios, using the unit circle. (1) 5.2 Trigonometric ratios of: – θ, 90° – θ, 180° ± θ, 36 (0) 5.3 The exact ratios. (0) 5.4 Bearings and angles of elevation. (0) 5.5 Sine and cosine rules for a triangle. Area of a triangle, given two sides and the included angle (0) 5.6 E Harder applications of 5.3, 5.4 and 5.5. (1) 5.7 E Trigonometric functions of sums and differences of angles. (1) 5.8 E Expressions for sin q, cos q and tan q in terms of tan ( ). (0) 5.9 E Simple trigonometric identities and equations. The general solution of trigonometric equations (1)