JavaScript asin() Method
Definition and Usage
The asin() method returns the arcsine of a number as a value between -PI/2 and PI/2 radians.
Note: If the parameter x is outside the range -1 to 1, the browser will return NaN.
Tip: 1 will return the value of PI/2. -1 will return the value of -PI/2.
Browser Support
| Method | |||||
|---|---|---|---|---|---|
| asin() | Yes | Yes | Yes | Yes | Yes |
Syntax
Math.asin(x)
Parameter Values
| Parameter | Description |
|---|---|
| x | Required. A number |
Technical Details
| Return Value: | A Number, from -PI/2 to PI/2, or NaN if the value is outside the range of -1 to 1 |
|---|---|
| JavaScript Version: | ECMAScript 1 |
