Solve, for −180≤θ<180∘-180 \leq \theta < 180^\circ−180≤θ<180∘,
4sin2θ=3tanθ 4 \sin 2\theta = 3 \tan \theta 4sin2θ=3tanθgiving your answers, where necessary, to 1 decimal place.
137 exam-style questions on Edexcel A Level Maths Trigonometry and Modelling, covering 7.1 Addition Formulae, 7.2 Double Angle Formulae, 7.3 Solving Trigonometric Equations, 7.4 Simplifying a cos x +- b sin x, 7.5 Proving Trigonometric Identities, and 7.6 Modelling with Trigonometric Functions. Each one has a worked solution and a mark scheme showing where the marks go.