Definition and Usage The asin() method returns the arcsine of a number as a numeric value between -PI/2 and PI/2 radians. Syntax Mat...
Definition and Usage
The asin() method returns the arcsine of a number as a numeric value between-PI/2 and PI/2 radians.
Syntax
Math.asin(x) |
| Parameter | Description |
|---|---|
| x | Required. Must be a numeric value in the range -1 to 1 |
Tips and Notes
Note: If the parameter x is outside the range -1 to 1, the browser will return NaN.Note: 1 will return the value of PI/2.
Example
In this example we will get the arcsine of different numbers:<script type="text/javascript"> document.write(Math.asin(0.64) + "<br />"); document.write(Math.asin(0) + "<br />"); document.write(Math.asin(-1) + "<br />"); document.write(Math.asin(1) + "<br />"); document.write(Math.asin(2)); </script> |
The output of the code above will be:
0.6944982656265559 0 -1.5707963267948965 1.5707963267948965 NaN |
