Radian Measure (Edexcel A-Level Mathematics): Quizzes

Angle when arc length equals radius

$\pi$ radians

$\frac{\pi}{2}$

$60°$

$s = r\theta$

$A = \frac{1}{2}r^2\theta$

$\frac{2\pi}{3}$

$\frac{5\pi}{2}$ cm

$6\pi$ cm²

1 radian