defence exam Agniveer Army Technical Mock Test Series 2025 Mathematics Complex Numbers

What is the principal argument of \(\frac{1}{1 + i}\) where \(i = \sqrt{-1}?\)

1
\(-\frac{3\pi}{4}\)
2
\(-\frac{\pi}{4}\)
3
\(\frac{\pi}{4}\)
4
\(\frac{3\pi}{4}\)
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