Answer
See plot.
a. $(2,\frac{8\pi}{3})$
b. $(-2,\frac{5\pi}{3})$
c. $(2,-\frac{4\pi}{3})$
Work Step by Step
We can plot the point by moving to angle $\theta=\frac{2\pi}{3}$ counterclockwise, and then to $r=2$ as shown in the figure.
a. We can find another representation for the same point using the given range as $(2,\frac{8\pi}{3})$
b. We can find another representation for the same point using the given range as $(-2,\frac{5\pi}{3})$
c. We can find another representation for the same point using the given range as $(2,-\frac{4\pi}{3})$