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Parfaite
@Parfaite
May 2019
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Bonjour , excusez moi de vous derangez
je ne suis pas sure exactement pour cet exercice
Voici une image de l'exercice 3
Merci de votre attention et de votre aide
Merci
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Verified answer
Bonjour,
1) la somme des angles d'un triangle = 180°
dAh =180°(90+25) = 65°
2) cos65= AH/AD
AH = 2800-2000 = 800m
cos65 =800/AD ( tu prends ta calcultrice pour cos65)
AD = 800/0,423 = 1891m
3) v =d/t
= 1891/4
= 472,75sec ≈7,87min soit moins de 8min
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Verified answer
Bonjour,1) la somme des angles d'un triangle = 180°
dAh =180°(90+25) = 65°
2) cos65= AH/AD
AH = 2800-2000 = 800m
cos65 =800/AD ( tu prends ta calcultrice pour cos65)
AD = 800/0,423 = 1891m
3) v =d/t
= 1891/4
= 472,75sec ≈7,87min soit moins de 8min