Solve, for −π<x<π-\pi < x < \pi−π<x<π, the equation
4cos(2x−0.3)+1=0 4\cos(2x - 0.3) + 1 = 0 4cos(2x−0.3)+1=0giving your answers, in radians, to 2 decimal places.
Solve, for 0∘<θ<360∘0^\circ < \theta < 360^\circ0∘<θ<360∘, the equation
3tanθsinθ=8−cosθ 3\tan \theta \sin \theta = 8 - \cos \theta 3tanθsinθ=8−cosθgiving your answers, in degrees, to one decimal place.
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.
