$0 < \theta < \frac{\pi}{2}$ के लिए,$\sum_{m=1}^6 \operatorname{cosec}\left(\theta+\frac{(m-1) \pi}{4}\right) \operatorname{cosec}\left(\theta+\frac{m \pi}{4}\right) = 4 \sqrt{2}$ के हल हैं:

  • A
    $(B, D)$
  • B
    $(C, D)$
  • C
    $(A, D)$
  • D
    $(A, B)$

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