Return the cosine of a number:
The output of the code above will be:
More "Try it Yourself" examples below.
The cos() method returns the cosine of a number.
Note: The cos() method returns a numeric value between -1 and 1, which represents the cosine of the angle.
Method | |||||
---|---|---|---|---|---|
cos() | Yes | Yes | Yes | Yes | Yes |
Parameter | Description |
---|---|
x | Required. A number |
Return Value: | A Number, from -1 to 1, representing the cosine of an angle, or NaN if the value is empty |
---|---|
JavaScript Version: | 1.0 |
Return the cosine PI and 2*PI:
The result of a and b will be: