"z=2+2\\sqrt{3}i."
"r=\\sqrt{2^2+(2\\sqrt{3})^2}=\\sqrt{16}=4."
"\\phi=arctan(\\frac{2\\sqrt{3}}{2})=arctan(\\sqrt{3})=\\frac{\\pi}{3}."
Polar form: "z=4(cos(\\frac{\\pi}{3})+isin(\\frac{\\pi}{3}))".
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