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Perform the Indicated Operation 2(cos30+isin30)3(cos180+isin180)2\left(\cos 30^{\circ}+i \sin 30^{\circ}\right) \cdot 3\left(\cos 180^{\circ}+i \sin 180^{\circ}\right)

Question 7

Essay

Perform the indicated operation. Give the answer in rectangular form.
(a) 2(cos30+isin30)3(cos180+isin180)2\left(\cos 30^{\circ}+i \sin 30^{\circ}\right) \cdot 3\left(\cos 180^{\circ}+i \sin 180^{\circ}\right)
(b) 3cis904cis30\frac{3 \operatorname{cis} 90^{\circ}}{4 \operatorname{cis} 30^{\circ}}
(c) (3+2i)3(-3+2 i)^{3}
(d) Find the fourth roots of 322322i\frac{3 \sqrt{2}}{2}-\frac{3 \sqrt{2}}{2} i . Leave your answers in trigonometric form.

Correct Answer:

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