How to use acos in JavaScript
In this article, I will explain use of acos() method in JavaScript.
JavaScript acos() Method
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acos() method of math object returns the arccosine in radians of a number.
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acos method returns a numeric value between 0 and pi radians for x between -1 and 1.
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In acos() method, if x value of number is outside this range, it returns NaN.
Syntax
Example
In the following example show to acos() method returns the arccosine of numbers.
<!DOCTYPE html>
<html>
<body>
<h3 style="background-color:Silver">acos() Method Example</h3>
<p id="demo">Click the button to display the arccosine of 0.8</p>
<button onclick="myFunction()">Click On</button>
<script type="text/javascript">
function myFunction() {
document.getElementById("demo").innerHTML = Math.acos(0.8);
}
</script>
</body>
</html>
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Output1
Output2
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