3+2 i 1-2 i will be purely imaginary, if θ is equal to
Mathematics · JEE Advanced · NTA Exams — Complex Numbers and Quadratic Equations
\(\frac{3+2 i \sin \theta}{1-2 i \sin \theta}\) will be purely imaginary, if θ is equal to
- \(2 n \pi \pm \frac{\pi}{3}\)
- \(\mathrm{n} \pi+\frac{\pi}{3}\)
- \(\mathrm{n} \pi \pm \frac{\pi}{3}\)
- None of these
Answer
(C) n 3
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