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0 + 360° Square roots of 5(cos 120° + i sin 120°) 0 + 360° (a) Use the formula zk = V(cos 75 (cos 60° + i sin 60°) + i sin to

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Square root of 5 (cos 120 + isin 120°) a) Use the formula, Zx = nr olk cos ( 4900 k la fision ti sin 0+360°k 50K) In, 5 (CosDate 6) Roots in standard form, Zo = 15 cos (60°) + isin (60°) 2 N J5 + i J5x3 2 Zo = J5 15 ti sis Z = or cos (240) +isin (24

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