Polar Form of Complex Number/Examples/5 cis 7 pi 6^-1

Example of Polar Form of Complex Number
The complex number $\polar {5, \dfrac {7 \pi} 6}$ can be expressed in Cartesian form as:
 * $5 \cis \dfrac {7 \pi} 6 = -5 \dfrac {\sqrt 3} 2 - \dfrac 5 2 i$

and depicted in the complex plane as:


 * 5 cis 7 pi 6^-1.png