asin() Math class method
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asin()
Description
Returns the arcsine of a number in radians between -PI/2 and PI/2.
- Radians to Degrees - divide number by (
Math.PI/ 180). - Degrees to Radians - multiply number by (
Math.PI* 180).
- Like all class methods
asin()should be used on the class rather than an instance of the class.
Syntax
| Signature | Description |
|---|---|
Math.asin(value) | Returns the arcsine of a number in radians between -PI/2 and PI/2. |
Parameters
| Parameter | Description |
|---|---|
value | The value you wish to find the arcsine in radians for:
|
Examples
The code below displays asin() usage.
// Store results in an array.
var asinValues = new Array(5);
asinValues[0] = Math.asin(-1);
asinValues[1] = Math.asin(0);
asinValues[2] = Math.asin(0.75);
asinValues[3] = Math.asin(-2);
asinValues[4] = Math.asin('a string');
asinValues[5] = Math.asin();
alert(asinValues);
Related Tutorials
JavaScript Advanced Tutorials - Lesson 4 - Math