Polar coordinates: [tex](r,\theta)[/tex]
[tex]r=3,\theta= \frac{3\pi}{2} [/tex]
Rectangular coordinates: [tex](x,y)=(r \cos{\theta},r \sin{\theta})[/tex]
[tex]x=r \cos{\theta}=3 \cos{ \frac{3\pi}{2} }=3 \times 0=0
\\ y=r \sin{\theta}=3 \sin{ \frac{3\pi}{2} }=3 \times (-1)=-3[/tex]
Rectangular coordinates are (0,-3).
