MCQ
Range of $\operatorname{coses}^{-1} X$ is
- A$\left[\frac{-\pi}{2}, \frac{\pi}{2}\right]$
- B$\left[\frac{-\pi}{2}, \frac{\pi}{2}\right]-\{0\}$
- C$\left[\frac{-\pi}{2}, \frac{\pi}{2}\right]-\{1\}$
- D$\left(\frac{-\pi}{2}, \frac{\pi}{2}\right)$
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