rappel de trigo

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Last updated 9:08 PM on 6/29/26
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8 Terms

1
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Les valeurs remarquables prises par cos ?

Cos (π\pi/2) = 0

Cos (π\pi/3) = ½

Cos (π\pi/4) = 22\frac{\sqrt2}{2}

Cos (π\pi/6) = 32\frac{\sqrt3}{2}

Cos (0) = 1

Cos (π\pi) = -1

2
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Les valeurs remarquables prises par sin ?

Sin(π\pi) = 0

Sin(π\pi/2) = 1

Sin(π\pi/3) = 32\frac{\sqrt3}{2}

Sin(π\pi/4) = 22\frac{\sqrt2}{2}

Sin(π\pi/6) = ½

Sin(0) = 0

3
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360 ou 0 degrés en radians ?

0

4
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45º en radians ?

π\pi/4

5
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90º en radian ?

π\pi/2

6
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180º en radians ?

π\pi

7
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Comment écrit on (cos(x))² ?

Cos²x

Pas Cos x² parce qu’on dirait cos(x²)

8
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Pour tout réel α\alpha

Cos²α\alpha + Sin²α\alpha = ?

1