MCQ
$\operatorname{cosec}^{-1}(-\sqrt{2})$ का मुख्य मान है
- ✓$\frac{-\pi}{4}$
- B$\frac{3 \pi}{4}$
- C$\frac{5 \pi}{4}$
- Dइनमें से कोई नहीं
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