If \( z(2-i 2 \sqrt{3})^{2}=i(\sqrt{3}+i)^{4} \) the amplitude of \( z \) is
(a) \( \frac{5 \pi}...
If \( z(2-i 2 \sqrt{3})^{2}=i(\sqrt{3}+i)^{4} \) the amplitude of \( z \) is
(a) \( \frac{5 \pi}{6} \)
(b) \( -\frac{\pi}{6} \)
(c) \( \frac{\pi}{6} \)
(d) \( \frac{7 \pi}{6} \)
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