Answer
$$\frac{\pi}{18}\space \text{radians}$$
Work Step by Step
Multiply by $\dfrac{\pi\space \text{radians}}{180^\circ}$ to convert from degrees to radians:
$$10^\circ \times \frac{\pi\space \text{radians}}{180^\circ}= \dfrac{\pi}{18}\space \text{radians}$$