JavaScript cos() Method
 Complete Math Object Reference
Definition and Usage
The cos() method returns the cosine of a number.
Syntax
| Parameter |
Description |
| x |
Required. A number |
Tips and Notes
Note: The cos()
method returns a numeric value between -1 and 1, which represents the cosine of
the angle.
Example
In the following example we will return the cosine of different numbers:
<script type="text/javascript">
document.write(Math.cos(3) + "<br />");
document.write(Math.cos(-3) + "<br />");
document.write(Math.cos(0) + "<br />");
document.write(Math.cos(Math.PI) + "<br />");
document.write(Math.cos(2*Math.PI));
</script>
|
The output of the code above will be:
-0.9899924966004454
-0.9899924966004454
1
-1
1
|
Try-It-Yourself Demos
cos()
How to use cos() to get the cosine of some numbers.
Complete Math Object Reference
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