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lauracbx
@lauracbx
June 2021
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On ne voit pas bien les mesure donc l angle mesure 49° longueur AC 25 cm et AR 30 cm je vous remercie de m'aider
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taidermisimovic
BC²=AR²-AC²=30²-25²=900-625=275
BC=√275≈16.58cm
CD=AC×cos 49°≈25×0.66≈16.5cm
BD=BC+CD≈16.58+16.5≈31.08cm
3 votes
Thanks 1
taidermisimovic
qualifiez la réponse comme la milleur
lauracbx
Tkt je le ferai mais je peut pas pour le moment je le fait toujours
taidermisimovic
comme meme merci
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Lista de comentários
BC=√275≈16.58cm
CD=AC×cos 49°≈25×0.66≈16.5cm
BD=BC+CD≈16.58+16.5≈31.08cm