Javascript Reference - JavaScript sin() Method
The sin() method returns the sine of a number.
Browser Support
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|---|---|---|---|---|---|
sin() |
Yes | Yes | Yes | Yes | Yes |
Syntax
Math.sin(x);
Parameter Values
| Parameter | Description |
|---|---|
| x | Required. A number |
Return Value
This method returns a value between -1 and 1, which represents the sine of the parameter x.
It returns NaN if the value is empty.
Example
The following code shows how to calculate the sine of a number.
<!-- w w w . ja v a 2s. co m-->
<!DOCTYPE html>
<html>
<head>
<script type="text/javascript">
function doMath() {
var inputNum1 = document.form1.input1.value;
var result = Math.sin(inputNum1);
document.form1.answer.value = result;
}
</script>
</head>
<body>
<form name=form1>
Enter Number: <input type="text" name="input1" size=10> <input
type="button" value="Calculate" onClick='doMath()'> <br>
The sine is: <input type="text" name="answer" size=20>
</form>
</body>
</html>