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What will be the Principal value of ?
What will be the Principal value of $\operatorname{cosec}^{-1}(-\sqrt{2})$?
- (a)$\frac{3\pi}{4}$
- (b)$-\frac{\pi}{6}$
- (c)$\frac{\pi}{4}$
- (d)$-\frac{\pi}{4}$
Answer
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From ISC 2022 Specimen Mathematics Paper 1, question 2.