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Noline
@Noline
May 2019
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Coucou,
Prouve que : Cos x+cos(x+2\pi /3)+cos(x+4\pi /3)= 0
Merci pour votre aide!
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Stiaen
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Bonjour,
Il s'agit de démontrer que:
Pour cela nous allons utiliser la
formule trigonométrique suivante
:
Application:
En conclusion:
2 votes
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Noline
May 2019 | 0 Respostas
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Bonjour,Il s'agit de démontrer que:
Pour cela nous allons utiliser laformule trigonométrique suivante:
Application:
En conclusion: