15 Fig. 15 shows a unit circle and the escribed regular polygon with 12 edges.
\begin{figure}[h]
\includegraphics[alt={},max width=\textwidth]{b4e10fd2-4144-4019-bf00-070f93a2b05d-11_839_876_356_269}
\captionsetup{labelformat=empty}
\caption{Fig. 15}
\end{figure}
- Show that the perimeter of the polygon is \(24 \tan 15 ^ { \circ }\).
- Using the formula for \(\tan ( \theta - \phi )\) show that the perimeter of the polygon is \(48 - 24 \sqrt { 3 }\).