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JEE Mains · Maths · STD 11 - 4.1 complex nubers

જો \(z \) એ એકમ માંનાક અને \(\theta \) કોણાંક ધરાવતી સંકર સંખ્યા હોય,તો \({\rm{arg}}\left( {\frac{{1 + z}}{{1 + \bar {\; z\;}}}} \right)\) મેળવો.

  1. A \( - \theta \)
  2. B \(\frac{\pi }{2} - \theta \)
  3. C \(\;\theta \)
  4. D \(\;\pi - \theta \)
Verified Solution

Answer & Solution

Correct Answer

(C) \(\;\theta \)

Step-by-step Solution

Detailed explanation

\(|z|=1,\) arg \(z=\theta \quad z=e^{i \theta}\) \(\bar{z}=\frac{1}{z}\) \(\arg \left(\frac{1+z}{1+\frac{1}{z}}\right)=\arg (z)=\theta\)
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