Let z= +i -i , 4 < < 2 . Then, arg (z) is
Mathematics · JEE Main · NTA Exams — Complex Numbers and Quadratic Equations
Let \(z=\frac{\cos \theta+i \sin \theta}{\cos \theta-i \sin \theta}, \frac{\pi}{4}<\theta<\frac{\pi}{2}\). Then, arg (z) is
- 2θ
- 2θ – π
- π + 2θ
- None of these
Answer
(A) 2 θ
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