Complex Numbers
De Moivre's Theorem
Premium Question
Grade 11

Question:

The real part of $\frac{(\sqrt{3} + i)^{2024}}{2^{2024}}$ is:
(1) $\frac{\sqrt{3}}{2}$
(2) $\frac{1}{2}$
(3) $-\frac{1}{2}$
(4) $-\frac{\sqrt{3}}{2}$

Step-by-Step Solution

Key Concept: Write $\sqrt{3} + i = 2e^{i\pi/6}$, so the expression $= e^{i\cdot 2024\pi/6}$. Find $2024 \pmod{12}$ to reduce the argument to a standard angle.
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Correct Answer: (3)

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