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Tangent in Half-Angle Substitution
## Formula
If:
$$t=\tan\frac x2$$
then:
$$\tan x=\frac{2t}{1-t^2}$$
## Usage
- Used to convert tangent into a rational function of $$t$$.
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Tangent in Half-Angle Substitution
## Formula
If:
$$t=\tan\frac x2$$
then:
$$\tan x=\frac{2t}{1-t^2}$$
## Usage
- Used to convert tangent into a rational function of $$t$$.
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