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Question 12 > Find all complex cube roots of 1-i. Give your answers in a + bi form, separated by commas. *** round to 2 decim
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Question 10 > An airplane is heading north at an airspeed of 600 km/hr, but there is a wind blowing from the southwest at 40
Question 3 Evaluate and write your answer in a + bi form. Round your decimals to the nearest tenth. (5(cos 120° + isin 120°)]
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Answer #1

Here I apply De Moivre's theorem to solve the problems. Now, [5 (los (120) tisin Given [5 (Cosizó tisin 120)) (1201)] 54.(Cors/20°+ 15 in 1200) Now, by De Moirres theorem, [cus ( Now, for 420, 2% [63-22) + isin (0/2)] = 246 [ 0.97 - 10:26 1.08- 0.29 i = 1.08-0.29 i for, kal, ZA + isinza 2% (-0.26 +0.97i

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