Syntax
math.acos(num)
The acos() method calculates the arccosine of a number.
The return value is between 0 and PI and is measured in radians.
If the return value is outside this range, 0 is returned.
<html>
<body>
<script language="JavaScript">
<!--
function doMath(){
var inputNum=document.form1.input.value;
var result = Math.acos(inputNum);
document.form1.answer.value = result;
}
-->
</script>
<form name=form1>
This example calculates the arccosine of the number entered.
<br><br>
Enter Number:
<input type="text" name="input" size=10>
<input type="button" value="Calculate" onClick='doMath()'>
<br>
The arccosine is:
<input type="text" name="answer" size=10>
</form>
</body>
</html>
| 9.3.acos |
| 9.3.1. | Math.acos() |