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Find the Fourth Roots Of −12+32i- \frac { 1 } { 2 } + \frac { \sqrt { 3 } } { 2 } i

Question 101

Multiple Choice

Find the fourth roots of −12+32i- \frac { 1 } { 2 } + \frac { \sqrt { 3 } } { 2 } i . Write the roots in trigonometric form.


A)
w1=cos⁡(20∘) +isin⁡(20∘) w2=cos⁡(110∘) +isin⁡(110∘) w3=cos⁡(200∘) +isin⁡(200∘) w4=cos⁡(290∘) +isin⁡(290∘) \begin{array} { l } w _ { 1 } = \cos \left( 20 ^ { \circ } \right) + i \sin \left( 20 ^ { \circ } \right) \\w _ { 2 } = \cos \left( 110 ^ { \circ } \right) + i \sin \left( 110 ^ { \circ } \right) \\w _ { 3 } = \cos \left( 200 ^ { \circ } \right) + i \sin \left( 200 ^ { \circ } \right) \\w _ { 4 } = \cos \left( 290 ^ { \circ } \right) + i \sin \left( 290 ^ { \circ } \right) \end{array}
B)
w1=cos⁡(30∘) +isin⁡(30∘) w2=cos⁡(120∘) +isin⁡(120∘) w3=cos⁡(210∘) +isin⁡(210∘) w4=cos⁡(300∘) +isin⁡(300∘) \begin{array} { l } w _ { 1 } = \cos \left( 30 ^ { \circ } \right) + i \sin \left( 30 ^ { \circ } \right) \\w _ { 2 } = \cos \left( 120 ^ { \circ } \right) + i \sin \left( 120 ^ { \circ } \right) \\w _ { 3 } = \cos \left( 210 ^ { \circ } \right) + i \sin \left( 210 ^ { \circ } \right) \\w _ { 4 } = \cos \left( 300 ^ { \circ } \right) + i \sin \left( 300 ^ { \circ } \right) \end{array}
C)
w1=cos⁡(35∘) +isin⁡(35∘) w2=cos⁡(125∘) +isin⁡(125∘) w3=cos⁡(215∘) +isin⁡(215∘) w4=cos⁡(305∘) +isin⁡(305∘) \begin{array} { l } w _ { 1 } = \cos \left( 35 ^ { \circ } \right) + i \sin \left( 35 ^ { \circ } \right) \\w _ { 2 } = \cos \left( 125 ^ { \circ } \right) + i \sin \left( 125 ^ { \circ } \right) \\w _ { 3 } = \cos \left( 215 ^ { \circ } \right) + i \sin \left( 215 ^ { \circ } \right) \\w _ { 4 } = \cos \left( 305 ^ { \circ } \right) + i \sin \left( 305 ^ { \circ } \right) \end{array}
D)
w1=cos⁡(25∘) +isin⁡(25∘) w2=cos⁡(115∘) +isin⁡(115∘) w3=cos⁡(205∘) +isin⁡(205∘) w4=cos⁡(295∘) +isin⁡(295∘) \begin{array} { l } w _ { 1 } = \cos \left( 25 ^ { \circ } \right) + i \sin \left( 25 ^ { \circ } \right) \\w _ { 2 } = \cos \left( 115 ^ { \circ } \right) + i \sin \left( 115 ^ { \circ } \right) \\w _ { 3 } = \cos \left( 205 ^ { \circ } \right) + i \sin \left( 205 ^ { \circ } \right) \\w _ { 4 } = \cos \left( 295 ^ { \circ } \right) + i \sin \left( 295 ^ { \circ } \right) \end{array}
E)
w1=cos⁡(40∘) +isin⁡(40∘) w2=cos⁡(130∘) +isin⁡(130∘) w3=cos⁡(220∘) +isin⁡(220∘) w4=cos⁡(310∘) +isin⁡(310∘) \begin{array} { l } w _ { 1 } = \cos \left( 40 ^ { \circ } \right) + i \sin \left( 40 ^ { \circ } \right) \\w _ { 2 } = \cos \left( 130 ^ { \circ } \right) + i \sin \left( 130 ^ { \circ } \right) \\w _ { 3 } = \cos \left( 220 ^ { \circ } \right) + i \sin \left( 220 ^ { \circ } \right) \\w _ { 4 } = \cos \left( 310 ^ { \circ } \right) + i \sin \left( 310 ^ { \circ } \right) \end{array}

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