Radian Measure (Edexcel A-Level Mathematics): Quizzes

$\sin \theta \approx \theta$

$\cos \theta \approx 1 - \frac{\theta^2}{2}$

$\tan \theta \approx \theta$

Radians

$\sin \theta \approx \theta$ and $\cos \theta \approx 1$

Higher-order terms like $\frac{\theta^3}{6}$

Pendulum motion

$0.1$

$1$

$\frac{\theta^2}{2}$