Answer
$-30°$
Work Step by Step
To convert from radians to degrees, the measurement in radians must be multiplied by $\frac{180°}{\pi}$.
Therefore
$-\frac{\pi}{6}$ radians= $-\frac{\pi}{6} \times \frac{180°}{\pi}$
$=-\frac{180°}{6}$
$=-30°$