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Year 12 Specialist (Unit 3 & 4) Complex numbers

Basic operations on complex numbers in polar form

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Questions
Question 1
163067

Simplify \(2\operatorname{cis}\left(\frac{\pi}{3}\right)+3 \operatorname{cis}\left(\frac{2 \pi}{3}\right)\).

\(\sqrt{19} \operatorname{cis}(1.68)\)

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