Calculate the arccosine of a number in JavaScript
Description
The following code shows how to calculate the arccosine of a number.
Example
<html>
<body>
<script language="JavaScript">
function doMath() {<!--from w ww . j a v a 2s . com-->
var inputNum = document.form1.input.value;
var result = Math.acos(inputNum);
document.form1.answer.value = result;
}
</script>
<form name=form1>
<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>