Bonjour j'ai du mal à un exercice de mathématiques sur les formules de trigonométrie si quelqu'un pourrais m'aider ce serais genial

By: USER2934
25 Agustus 2025 mathematiques 5 minutes
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Question

Grade: Education Subject: mathematiques
Bonjour j'ai du mal à un exercice de mathématiques sur les formules de trigonométrie si quelqu'un pourrais m'aider ce serais genial
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Answer (131)

Best Answer
(308)
Cosinus =côté adjacent à l'angle sue l'hypotenuse
sinus=côté opposé à l'angle sur l'hypotenuse
tangente=côté opposé à l'angle sur côté adjacent à l'angle.
pour t'en souvenir pense au "casse-toi"
CAH SOH TOA si tu regardes les lettres sa fait le début des formules de trigonométrie
Answered on 25 Agustus 2025

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Bonjour si quelqu’un pourrait m’aider surtout pour la question c. merci

On s'intéresse au nombre réel x = 0,999 999 999 .......(une infinité de chiffres 9 après la virgule)
1.
a. Soit y = 1/3 , Donner une écriture décimale de y.

b. En déduire une écriture décimale de 3y.

c.Donner alors une autre écriture de x.

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Bonjour ! Pour demain j'ai 3 exercice mais... Je n'ai jamais compris ce genre d'exercice ! Je donne tout mes point mais j'vous en supplie aidez moi...






Ex. 1: développer et réduire :

A= 3(x+5)

B = -x ( 7x - 5)

Ex. 2: factoriser les expressions suivantes en utilisant le facter
possible :

A= 3 X x +3 X 5

B= 6x - 3x²

Ex. 3 : réduire les expressions suivantes :

A= 3x² + 3 - 5x

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cum sau format cuv incolo puisor

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