When θ=3∘\theta=3^\circθ=3∘, an approximation of 6cos(θ)+cos2(2θ)6\cos(\theta)+\cos^2(2\theta)6cos(θ)+cos2(2θ) is 6.98084
Calculate the percentage error in your approximation
278 exam-style questions on Edexcel A Level Maths Radians, covering 5.1 Radian Measure, 5.2 Arc Length, 5.3 Areas of Sectors and Segments, 5.4 Solving Trigonometric Equations, and 5.5 Small Angle Approximations. Each one has a worked solution and a mark scheme showing where the marks go.