The argument $$\arg(z)$$ is the angle $$\theta$$ such that $$\tan \theta = \frac{y}{x}$$ (with quadrant adjustment).
Principal value: $$-\pi \lt \theta \leq \pi$$.
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CAT Formulas
Complex Numbers
Argument of Complex Number
The argument $$\arg(z)$$ is the angle $$\theta$$ such that $$\tan \theta = \frac{y}{x}$$ (with quadrant adjustment).
Principal value: $$-\pi \lt \theta \leq \pi$$.
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