Step 1:
Given two complex numbers in trigonometric form, say $z_1 = r_1(\cos \theta_1 + i \sin \theta_1)$ and $z_2 = r_2(\cos \theta_2 + i \sin \theta_2)$, where $r_1$ and $r_2$ are the moduli and $\theta_1$ and $\theta_2$ are the arguments of $z_1$ and $z_2$
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