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Direct Composition of $$\cos$$ and $$\cos^{-1}$$
## Formula
$$\cos(\cos^{-1}x)=x,\quad -1\le x\le1$$
## Usage
- Used to eliminate a direct cosine function applied to its inverse.
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Direct Composition of $$\cos$$ and $$\cos^{-1}$$
## Formula
$$\cos(\cos^{-1}x)=x,\quad -1\le x\le1$$
## Usage
- Used to eliminate a direct cosine function applied to its inverse.
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