Exercice Centre de Gravité
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Exercice Centre de Gravité

by panpan1663

Exercice 1 zI+zJ +zK= b+c 2 + a+c 2 + a+b 2 = 2a+2b+2c 2 =a+b+c Or, zG= a+b+c 3 Donc, zG= zI +zJ +zK 3 Exercice 2 ⃗ GI=− 1 2 ⃗ GA ; ⃗ GJ =− 1 2 ⃗ GB et ⃗ GI=− 1 2 ⃗ GC Donc, ⃗ GI+⃗ GI+⃗ GI =− 1 2 ×(⃗ GA+⃗ GB+⃗... More

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