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![\bf 8[cos(216^o)+i~sin(216^o)]\implies 8[\stackrel{\approx}{-0.809016994}+i~\stackrel{\approx}{(-0.58778525229)}] \\\\\\ \stackrel{\approx}{-6.472135955}-\stackrel{\approx}{4.702282018~i}](/tpl/images/0131/5074/fb7e8.png)
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8(cos 216 degrees + i sin 216 degrees)...
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