Argument of Complex Number/Examples/-1-i/Mistake

Source Work

 * Chapter $2$: Geometrical Representations
 * Example $\text{(iv)}$
 * Example $\text{(iv)}$

This mistake can be seen in the $1960$ edition as published by Routledge & Kegan Paul.

Mistake

 * $\arg \left({-1 - i}\right) = -\dfrac \pi 4$

The correct result is:
 * $\arg \left({-1 - i}\right) = -\dfrac {3 \pi} 4$