hinateagermain22 hinateagermain22
  • 24-04-2024
  • Mathematics
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On considère un rectangle ABCD tel que AB = 7 et AD = 3. Les points H et K sont les projetés orthogonaux respectivement des points A et C sur la diagonale (BD). 1. Exprimer le produit scalaire AC • DB en fonction de HK, 2nEnisiant De - sc Ca. calculer autement cemame produit scalaire. 3. En déduire la valeur exacte de la longueur HK.

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