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JavaScript Math asin() Method

JavaScript Math asin() Method with example, javascript math methods, abs() method, round() method, ceil() method, floor() method, pow() method, random() method, sqrt() method, max() method, min() method, log() method, sin() method, cos() method, tan() method etc.

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JavaScript Math asin() method

The JavaScript math asin() method returns the arcsine of the given number in the form of radians. The asin() method must be in the range -1 to 1, otherwise it returns NaN.

Syntax

The asin() method is represented by the following syntax:

Math.asin(num)

Parameter

num - A number.

Return

The arcsine of the number.

JavaScript Math asin() method example

Here, we will understand asin() method through various examples.

Example 1

Let's see a simple example of asin() method.

<script>
document.writeln(Math.asin(-1)+"<br>");
document.writeln(Math.asin(0)+"<br>");
document.writeln(Math.asin(0.5)+"<br>");
document.writeln(Math.asin(1));
</script>
Test it Now

Output:

-1.5707963267948966
0
0.5235987755982989
1.5707963267948966

Example 2

Let's see some cases where asin() method returns NaN.

<script>
document.writeln(Math.asin()+"<br>");
document.writeln(Math.asin(2)+"<br>");
document.writeln(Math.asin(-2));
</script>
Test it Now

Output:

NaN
NaN
NaN

Example 3

Here, you can test asin() method with your own test cases.

<script>
function display()
{
  var x=document.getElementById("num").value;
document.getElementById("result").innerHTML=Math.asin(x);
}
</script>
<form>
  Enter a number: <input type="text" id="num">
  <input type="button"  onclick="display()" value="submit">
  </form>
  <p><span id="result"></span></p>
Test it Now
Next TopicJavaScript Math




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