## Trigonometry 7th Edition

To find the nth power of a complex number, find the nth power of the $modulus$ and multiply the $argument$ by $n$.
To find the nth power of a complex number, find the nth power of the $modulus$ and multiply the $argument$ by $n$. If, $z=rcis\theta$ then, $z^{n}=r^{n}cis(n\theta)$