#### Answer

$\dfrac{180^o}{\pi}$

#### Work Step by Step

RECALL:
$\pi$ radians = $360^o$
Thus, to convert radians to degrees, multiply the radian measure by $\dfrac{180^o}{\pi}$, then simplify.
Therefore, the missing expression in the given statement is:
$\dfrac{180^o}{\pi}$