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@@ -5,7 +5,7 @@ up::[[formules de trigonométrie]]
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sibling::[[sinus d'une somme]]
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type::"formule de somme"
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title::"$\cos(a+b) = \cos(a)\cos(b) - \sin(a)\sin(b)$"
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#maths/trigonométrie
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#s/maths/trigonométrie
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---
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