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Elehello
@Elehello
May 2019
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BONJOUR,
J'ai un devoir maison pour demain et je galère, aidez-moi donner moi des explications !
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Verified answer
Bonjour,
ex 2 :
cos20 = HB/HP
cos20 = HB/9
HB = 9*cos20≈ 8,4m
⇒on peut aller jusqu'à 8,4m
exo 3 :
tan25 = SB/AB = SB/45
SB = tan25*45 ≈20,98 soit 21m
h = SB+BD = ...
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Aider moi a fairel'exercice 24 !
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J'arrive pas, c'est pour vendredi (physique chimie 4eme)
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Est ce que vous pouvez m'aider svp c'est un devoir maison et je ne comprends pas
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Verified answer
Bonjour,ex 2 :
cos20 = HB/HP
cos20 = HB/9
HB = 9*cos20≈ 8,4m
⇒on peut aller jusqu'à 8,4m
exo 3 :
tan25 = SB/AB = SB/45
SB = tan25*45 ≈20,98 soit 21m
h = SB+BD = ...