Inverse Sine of a Rationalized Form

Rarely Tested

Inverse Sine of a Rationalized Form

## Formula

For $$x\ge0$$:

$$\sin^{-1}\left(\frac{x}{\sqrt{1+x^2}}\right)=\tan^{-1}x$$

## Usage

- Used to convert inverse sine expressions containing $$\frac{x}{\sqrt{1+x^2}}$$ into inverse tangent form.

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