Answer
please see image:
Work Step by Step
Draw an angle of $-\displaystyle \frac{2\pi}{3}$ in standard position.
This is done by counting two $\displaystyle \frac{\pi}{3}$ arcs clockwise from 0, so the terminal side is the same as for the angle $\displaystyle \frac{4\pi}{3}$ (blue on the image).
r=3 is positive,
so the point P will be on the terminal side of the angle, 3 units from the pole (origin).