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tangente du double.md
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tangente du double.md
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---
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alias: "tan(2x)"
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---
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sibling:: [[tangente hyperbolique du double]]
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up::[[formules de trigonométrie]]
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sibling::[[tangente hyperbolique du double]]
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type::"formule de duplication"
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title::$\tan(2x) = \dfrac{2\tan(x)}{1-\tan^{2}(x)}$
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#maths/trigonométrie
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----
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$\tan(2x) = \dfrac{2\tan(x)}{1-\tan^{2}(x)}$
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Se déduit de la [[tangente d'une somme]]
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