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angle (2,7)
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Solution
arctan(72)
+2
Degrees
74.05460…◦
Decimal
1.29249…
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L'angle depuis l'axe des x
L'angle entre un vecteur, (
a
b
)etl′axepositifdesxdépendduquadrantsurlequelsetrouvelepointdans Premier quadrant : θ=arctan(ba) Deuxième quadrant : θ=π−arctan(|ba|) Troisième quadrant : θ=arctan(|ba|)−π Quatrième quadrant : θ=−arctan(|ba|)