8 The curves \(C _ { 1 }\) and \(C _ { 2 }\) have polar equations given by
$$\begin{array} { l l r }
C _ { 1 } : & r = 3 \sin \theta , & 0 \leqslant \theta < \pi ,
C _ { 2 } : & r = 1 + \sin \theta , & - \pi < \theta \leqslant \pi .
\end{array}$$
- Find the polar coordinates of the points, other than the pole, where \(C _ { 1 }\) and \(C _ { 2 }\) meet.
- In a single diagram, draw sketch graphs of \(C _ { 1 }\) and \(C _ { 2 }\).
- Show that the area of the region which is inside \(C _ { 1 }\) but outside \(C _ { 2 }\) is \(\pi\).