Teaching UP TGT Mock Test Series 2025 Mathematics Complex Numbers De Moivre's Theorem

\((1+i\sqrt{3})^n + (1-i\sqrt{3})^n\) :

1
\(2^{n+1} \cos \dfrac{n\pi}{3}\)
2
\(2^{n+1} \sin \dfrac{n\pi}{3}\)
3
\(2^{n-1} \cos \dfrac{n\pi}{3}\)
4
\(2^{n-1} \sin \dfrac{n\pi}{3}\)
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