Produit scalaire et cosinus

On note θ une mesure de l'angle (u,v) en radians.
Déterminer la valeur exacte du produit scalaire uv lorsque:
u=, v= et θ=π2

Aide à la saisie

Pour saisir une racine carrée, taper sqrt(..), ex pour 22, taper sqrt(2)/2.

Do you confirm?

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