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Sasala01
@Sasala01
May 2019
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Bonsoir j'ai besoin d'aide je n'ai pas compris merci beaucoup d'avance de votre aide
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ProfdeMaths1
Verified answer
1) figure
2) (OF,DE)=(OF,OD)+(OD,DE)
=(OF,OD)-(DO,DE)
=60°-60°
=0°
donc OF et DE sont coinéaires
or ||OF||)||DE|| donc OF=DE
3) (OC,OA)=120°
(FO,BC)=-60°
(EC,OA)=90°
(DB,EF)=30°
2 votes
Thanks 0
sasala01
Mercii beaucoup
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Bonsoir je n'ai pas compris mon exercice merci beaucoup d'avance cordialement
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Verified answer
1) figure2) (OF,DE)=(OF,OD)+(OD,DE)
=(OF,OD)-(DO,DE)
=60°-60°
=0°
donc OF et DE sont coinéaires
or ||OF||)||DE|| donc OF=DE
3) (OC,OA)=120°
(FO,BC)=-60°
(EC,OA)=90°
(DB,EF)=30°