For -343, (a) find all cube roots of the complex number. Write answers in trigonometric form. (b) Graph each cube root as a vector in the complex plane. (a) Choose the correct answer below. O 343(cos 30+isin 30), 343(cos 90+isin 90°),343(cos 180° +isin 180") O 343(cos 60+isin 60), 343(cos 180+isin 180"), 343(cos 300*+/sin 300°) O 7(cos 60°+isin 60), 7(cos 180°+isin 180), 7(cos 300+isin 300") O 7(cos 60+isin 60), 7(cos 120"+isin 120°), 7(cos 180+isin 180°) (b) Choose the correct graph below OA. OB. O C. OD.

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