from github to this gitea

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oscar.plaisant@icloud.com
2023-10-23 23:09:51 +02:00
commit a2ee0fa5ca
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---
alias: "tange en fonction de tan(x/2)"
---
up::[[formules de trigonométrie]]
type::$t = \tan\left(\frac{x}{2}\right)$
title::$\tan(x) = \dfrac{2t}{1-t^{2}}$
#maths/trigonométrie
----
On pose $\disp t = \tan\left(\frac{x}{2}\right)$
$\tan(x) = \dfrac{2t}{1-t^{2}}$