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MinatoNM
@MinatoNM
January 2021
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Bonjour je n'arrive pas a trouver l'angle entre deux vecteurs.
Les coordonnées sont: u( 0 , a/2 , a/2 ) et v( a/2 , 0 , a/2 )
Normalement je doit trouver un angle de 90° or je trouve 60°.
Voila comment j'ai fait : θ=arccos((u.b)/(║u║.║v║)=arccos(((0,a/2,a/2).(a/2,0,a/2))/(a²/2)=arccos1/2 = 60°
Normalement le terme u.b doit être = à 0 pour avoir un angle de 90°.
J'ai fait un schéma pour mieux comprendre.
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