1. Home

JavaScript Math asin() Method

The Math.asin() method returns the arcsine (in radians) of a number

Definition and Usage

The Math.asin() method returns the arcsine (in radians) of a number.

The Math.asin() method returns a value between -PI/2 and PI/2.

The Math.asin() method expects a parameter in the range -1 to 1.

Math.asin(-1) returns -PI/2.
Math.asin(0) returns 0.
Math.asin(1) returns PI/2.

JavaScript Sine and Cosine Methods:

The Math.sin() Method
The Math.sinh() Method
The Math.asin() Method
The Math.asinh() Method

The Math.cos() Method
The Math.cosh() Method
The Math.acos() Method
The Math.acosh() Method

Syntax

Math.asin(x)

Parameters

Parameter Description
x Required.
A number.

Return Value

Type Description
Number-PI/2 to PI/2.
NaN if the parameter is not numeric or outside the range of -1 to 1.

Related Pages:

JavaScript Math

JavaScript Numbers

JavaScript Number Reference

Browser Support

Math.asin() is an ECMAScript1 (ES1) feature.

ES1 (JavaScript 1997) is fully supported in all browsers:

Chrome IE Edge Firefox Safari Opera
Yes Yes Yes Yes Yes Yes

Categories

HTML CSS3 Bootstrap Foundation Sass JavaScript TypeScript JQuery AngularJS React NodeJS Highcharts PHP Python Python3 Django Linux Docker Ruby Java C C ++ Perl Servlet JSP Lua Scala Go ASP C # SQL MySQL SQLite MongoDB Redis Android Swift ionic Kotlin XML tutorial

Contact US