Maths IE1

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Last updated 10:59 AM on 10/18/26
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6 Terms

1
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Sinus, cosinus et tangentes classiques

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2
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Formules d’addition trigo

cos(a+b) = cos(a)cos(b) - sin(a)sin(b)

sin(a+b) = sin(a)cos(b) + sin(b)cos(a)

3
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Formules de duplication trigo

cos(2a) = 2cos²(a) - 1 = 1 - 2sin²(a)

sin(2a) = 2sin(a)cos(a)

4
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Formule coeff binomial

k parmi n = n! / k!(n-k)!

5
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Deux propriétés coeff binomiaux

k parmi n = n-k parmi n

k+1 parmi n+1 = k parmi n + k+1 parmi n

6
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Formule binôme de Newton

(a+b)^n = somme de k=0 à k=n de k parmi n * a^(n-k) * b^k