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Further complex numbers — Question 177

Original QCE Vault practice · 1 mark

Q177 · Practice questionTechnology-freeComplex familiar1 mark

QUESTION 177

Let

a=4\operatorname{cis}(3\pi/4)

and

b=2\operatorname{cis}(-3\pi/4)

. Which is a/b?

(A)

2i

(B)

-2i

(C)

2

(D)

-8i

ABCD

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