using demoivre's theorem simplify: (cos3a+ isin3a)4(cos4a+isin4a)2/ (cos2a+isina)5 (cos5a+isin5a)3
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using demoivre's theorem simplify: (cos3a+ isin3a)4(cos4a+isin4a)2/ (cos2a+isina)5 (cos5a+isin5a)3
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