Class 11Mathematics1 Complex Numbers and Quadratic Equations: Complex NumbersDe Moivre's theorem and Roots of unity
MediumIf $i{z^4} + 1 = 0$,then $z$ can take the value
- A$\frac{1 + i}{\sqrt{2}}$
- B$\cos \frac{\pi}{8} + i \sin \frac{\pi}{8}$
- C$\frac{1}{4i}$
- D$i$
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