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 AQA A Level Maths 1.8 E: Trigonometry with exam-style questions for A Level Maths. 239 questions covering 1.8.1 Trigonometric definitions, rules and radians, 1.8.2 Small angle approximations (A-level only), 1.8.3 Trigonometric functions and exact values, 1.8.4 Reciprocal and inverse trigonometric functions (A-level only), 1.8.5 Trigonometric identities, 1.8.6 Compound and double angle formulae (A-level only), 1.8.7 Solving trigonometric equations, 1.8.8 Proofs with trigonometric identities, and 1.8.9 Trigonometry in context, matched to the AQA A Level Maths (7357) 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.
