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oumousakho85
@oumousakho85
July 2022
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Bonjours est ce que quelqu'un pourrait m'aider s’il vous plaît
Un triangle Calculer la valeur des
angles, en degrés, de
ce triangle
A=40
C=3х - 17
B=x+40+40
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Faola
La somme des angles d’un triangle est toujours égale à 180 degrés alors
MesA+ MesB +MesC = 180
40+ x+40 +3x-17 = 180
Rassemblons les termes de même nature
40+40-17+x+3x = 180
80-17+4x= 180
63+4x = 180
4x =180-63
4x = 117
x=117/4
x=29,25
Alors MesB=29,25+40=69,25 degrés et MesC=(3x29,25)-17=70,75 degrés
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MesA+ MesB +MesC = 180
40+ x+40 +3x-17 = 180
Rassemblons les termes de même nature
40+40-17+x+3x = 180
80-17+4x= 180
63+4x = 180
4x =180-63
4x = 117
x=117/4
x=29,25
Alors MesB=29,25+40=69,25 degrés et MesC=(3x29,25)-17=70,75 degrés