What angle measure, in radians, is equal to $30^\circ$ ?

$\dfrac{\pi}{6}$

$\dfrac{\pi}{5}$

$\dfrac{\pi}{3}$

$\dfrac{\pi}{2}$

$\dfrac{5\pi}{6}$

Approach

Every $2\pi$ radians is equal to $360^\circ$.

$$ \frac{30}{360} = \frac{x}{2\pi} $$ $$ \frac{1}{12} = \frac{x}{2\pi} $$ $$ x = \boxed{\frac{\pi}{6}} $$