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JavaScript cos() Method
JavaScript Math Object
Definition and Usage
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.
Syntax
Math.cos(x)
| Parameter | Description |
|---|---|
| x | Required. A number |
Browser Support
The cos() method is supported in all major browsers.
Example
Example
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>
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
-0.9899924966004454
1
-1
1
Try it yourself »
JavaScript Math Object
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Tutorials, references, and examples are constantly reviewed to avoid errors, but we cannot warrant full correctness of all content.
While using this site, you agree to have read and accepted our terms of use and privacy policy.
Copyright 1999-2012 by Refsnes Data. All Rights Reserved.
Tutorials, references, and examples are constantly reviewed to avoid errors, but we cannot warrant full correctness of all content.
While using this site, you agree to have read and accepted our terms of use and privacy policy.
Copyright 1999-2012 by Refsnes Data. All Rights Reserved.