Question: 5. Let a = x + yi = 1+ v3 2 2 . . a) Find 0 such that a = cos 0 + i

5. Let a = x + yi = 1+ v3 2 2 . . a) Find 0 such that a = cos 0 + i sin 0 = e. b) Find n such that a" = 1, and the elements of set S = (a, a, ..., a" = 1}. c) If 0 = arctan ~ and r = x+ y , ...

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