Find the distance from the point A(7,6,10) to the line passing through B(3,7,0) and C(4,9,-2).

I know that the vector is $\displaystyle \overrightarrow{BC} = \left \langle 1,2,-2 \right \rangle$ and that the equation of the line is thus $\displaystyle \mathbf{x} = (3,7,0) + t(1,2,-2) t\epsilon \mathbb{R}$ but I dont understand how you can find the distance between A and this line?