Cosine Calculator
Calculate the cosine of any angle in degrees or radians
Result:
0.7071067811865476
Understanding Cosine
What is Cosine?
Cosine (cos) is a fundamental trigonometric function that relates angles to the ratio of the adjacent side to the hypotenuse in a right triangle. In the unit circle, it represents the x-coordinate of a point on the circle.
Key Properties
- Domain: All real numbers
- Range: [-1, 1]
- Period: 2Ï€ radians (360 degrees)
- Even function: cos(-x) = cos(x)