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Range-Based Rule for $$\cos^{-1}(\cos x)$$
## Formula
For:
$$x\in[\pi,2\pi]$$
$$\cos^{-1}(\cos x)=2\pi-x$$
## Usage
- Used to reduce inverse cosine of cosine when $$x$$ lies in the third or fourth quadrant.
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Range-Based Rule for $$\cos^{-1}(\cos x)$$
## Formula
For:
$$x\in[\pi,2\pi]$$
$$\cos^{-1}(\cos x)=2\pi-x$$
## Usage
- Used to reduce inverse cosine of cosine when $$x$$ lies in the third or fourth quadrant.
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