1. On the same set of axes, sketch the graphs of the following functions:

(i) $y=2sin \theta$ in the interval $0^{\circ}\leq \theta \leq360^{\circ}$

(ii) $y=-2sin \theta$ in the interval  $0^{\circ}\leq \theta \leq360^{\circ}$

The sketch must include coordinates of all points where the graph meets the coordinate axes. Also state the periodicity of each function.