QCAA Specialist Mathematics Practice Questions - QCAA Specialist Mathematics (Units 3 & 4) Exam

Express the complex number z = 2\text{cis}\left(\frac{\pi}{3}\right) in Cartesian form a + bi.

1 + \sqrt{3}i \sqrt{3} + i 1 - \sqrt{3}i 2 + 2\sqrt{3}i

Correct Answer:

1 + \sqrt{3}i

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