Given that θ \theta\,θ is small and is measured in radians, use the small angle approximations to find an approximate value of
8θsin5θ1−cos4θ \frac{8\theta \sin 5\theta}{1 - \cos 4\theta} 1−cos4θ8θsin5θFind an approximate value of the expression.
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.