subject
Mathematics, 06.04.2021 14:00 hopkinbr

Bonjour aidez moi à résoudre cet exercice: La pyramide SABCD
ci-contre a pour base le
rectangle ABCD et pour
hauteur le segment (SA).
Α:
On donne AB = 8,2 cm et
B
SA= 4 cm.
On donne également
с
ASD = 30°.
1. Donner sans les justifier, la nature du triangle SAB
et celle du triangle SAD.
2. Calculer une valeur approchée:
a. au degré près de la mesure de l'angle SBA;
b. au dixième près de la longueur SD, en cm.
Conseil
Dans un triangle rectangle de l'espace, tu peux aussi
utiliser la trigonométrie.
Merci et bonnne journée ​

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Answers: 1

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ci-contre a pour base le
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