Given that θ \theta\,θ is small and is measured in radians, use the small angle approximations to find an approximate value of
5θtan2θcos4θ−1\displaystyle \frac{5\theta \tan 2\theta}{\cos 4\theta - 1}cos4θ−15θtan2θ
225 exam-style questions on WJEC A Level Maths 3.5 Trigonometry (A-level only), covering 3.5.1 Trigonometry (A-level only), 3.5.2 Trigonometry (A-level only), 3.5.3 Trigonometry (A-level only), 3.5.4 Trigonometry (A-level only), 3.5.5 Trigonometry (A-level only), 3.5.6 Trigonometry (A-level only), 3.5.7 Trigonometry (A-level only), and 3.5.8 Trigonometry (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.