- #1
Mutatis
- 42
- 0
Homework Statement
Write ##5-3i## in the polar form ##re^\left(i\theta\right)##.
Homework Equations
$$
|z|=\sqrt {a^2+b^2}
$$
The Attempt at a Solution
First I've found the absolute value of ##z##:
$$ |z|=\sqrt {5^2+3^2}=\sqrt {34} $$.
Next, I've found $$ \sin(\theta) = \frac {-3} {\sqrt {34}} \\ \cos(\theta) = \frac {5} {\sqrt {34}}.$$ I don't know what to do next because I haven't found any exact value from these numbers...