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Domain of $$\cos^{-1}x$$
## Formula
$$x\in[-1,1]$$
## Usage
- Used to check whether an inverse cosine expression is defined for a real input.
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Domain of $$\cos^{-1}x$$
## Formula
$$x\in[-1,1]$$
## Usage
- Used to check whether an inverse cosine expression is defined for a real input.
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