सम्मिश्र संख्या \(\left(i^{25}\right)^{3}\) का ध्रुवीय प्रारूप क्या है ? 

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BDL MT Mechanical 16 April 2022 Official Paper
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  1. \(\cos \frac{\pi}{2}+i \sin \frac{\pi}{2}\)
  2. \(2 \cos \frac{\pi}{2}-3 i \sin \frac{\pi}{2}\)
  3. \(\cos \frac{\pi}{2}-i \sin \frac{\pi}{2}\)
  4. \(3 \cos \frac{\pi}{2}-5 i \sin \frac{\pi}{2}\)

Answer (Detailed Solution Below)

Option 3 : \(\cos \frac{\pi}{2}-i \sin \frac{\pi}{2}\)
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