Question:medium
The value of $\left[\cos\frac{\pi}{8} + i\sin\frac{\pi}{8}\right]^{-4}$ is
The value of $\left[\cos\frac{\pi}{8} + i\sin\frac{\pi}{8}\right]^{-4}$ is
Show Hint
Negative powers simply reverse the angle sign.
Updated On: Apr 30, 2026
- $-i\pi$
- $i\pi$
- $i$
- $-i$
- $\pi$
Show Solution
The Correct Option is D
Solution and Explanation
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