De Moivre's theorem to express power

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lee123456789

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A)Use de moivres therom to express power in simplest polar form

Workings

Do i need to divde the 60^o by 10 aswell

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Babadag

If P=4*[cos(30o)+i*sin(30o)] then P^2/10=1.6*[cos(60o)+i*sin(60o)]

So, you don't need to divide then the final argument also[60o].

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