Calculatrice de Cosinus Gratuite
Calculez le cosinus d'un angle en degrés ou en radians. Obtenez la valeur de cos(x) instantanément.
deg
Cosine Val
0.50000000
Sine Val0.86602540
Tangent Val1.73205081
Formule
Cosine Function
Definition
In a right triangle, cos(angle) = adjacent / hypotenuse.
On the unit circle, cos(angle) is the x-coordinate of the point at that angle.
Key Values
Exemple Résolu
Calculate cos(60°).
- 01cos(60°) = 0.5
- 02sin(60°) = √3/2 ≈ 0.8660
- 03tan(60°) = √3 ≈ 1.7321
Questions Fréquentes
What is the cosine function?
Cosine gives the ratio of the adjacent side to the hypotenuse in a right triangle, or the x-coordinate on the unit circle.
How are sine and cosine related?
sin²(x) + cos²(x) = 1 (Pythagorean identity). Also, cos(x) = sin(90° - x) and vice versa.
When is cosine zero?
Cosine equals zero at 90° and 270° (and every 180° offset from those).
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