ple 1: The figure above shows a circle of radius 4 along with the equilateral triangle \( P Q O \). Whi ing gives the coordinates of point \( Q \) ?
\[
\begin{array}{l}
\left.\cos \frac{\pi}{3}, 4 \sin \frac{\pi}{3}\right) \\
\left.\frac{5 \pi}{6}, 4 \sin \frac{5 \pi}{6}\right) \\
\left.\frac{2 \pi}{3}, 4 \sin \frac{2 \pi}{3}\right) \\
\frac{2 \pi}{3}, 4 \sin \frac{2 \pi}{3}
\end{array}
\]