1. Sketch the graph of $y=tan \theta$ in the interval $-270^{\circ}\leq \theta \leq270^{\circ}$. The sketch must include coordinates of all points where the graph meets the coordinate axes.

Given that $tan30^{\circ}=\frac{1}{\sqrt{3}}$, use your graph to find all other values of $\theta$ in the given interval for which $tan \theta =\frac{1}{\sqrt{3}}$.