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Inverse Cosine of a Rationalized Form
## Formula
For $$x\ge0$$:
$$\cos^{-1}\left(\frac{x}{\sqrt{1+x^2}}\right)=\tan^{-1}\frac1x$$
## Usage
- Used to convert inverse cosine expressions into inverse tangent form.
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Inverse Cosine of a Rationalized Form
## Formula
For $$x\ge0$$:
$$\cos^{-1}\left(\frac{x}{\sqrt{1+x^2}}\right)=\tan^{-1}\frac1x$$
## Usage
- Used to convert inverse cosine expressions into inverse tangent form.
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