The range of \( \cos ^{-1} x \) is equal to (1) \( [0, \pi] \) (2) ...

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The range of \( \cos ^{-1} x \) is equal to
(1) \( [0, \pi] \)
(2) \( \left(\frac{-\pi}{2}, \frac{\pi}{2}\right) \)
\( \mathrm{P} \)
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(3) \( \left[\frac{-\pi}{2}, \frac{\pi}{2}\right] \)
(4) \( (0, \pi) \)
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