CoffeeScript Math - asin()

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Description

The asin() method accepts an integer value and returns its arc-sine in radians. The asin method returns a numerical value between -pi/2 and pi/2 radians for x between -1 and 1. If the value of number is outside this range, it returns NaN.

Syntax

Given below is the syntax of asin() method of JavaScript. We can use the same method in the CoffeeScript code.

Math.asin( x )

Example

The following example demonstrates the usage of the asin() method in CoffeeScript. Save this code in a file with name math_asin.coffee.

value = Math.asin -1
console.log "The arc sine value of -1 is : " + value 
         
value = Math.asin null
console.log "The arc sine value of null is : " + value 
         
value = Math.asin 20
console.log "The arc sine value of 20 is : " + value

Open the command prompt and compile the .coffee file as shown below.

c:\> coffee -c math_asin.coffee

On compiling, it gives you the following JavaScript.

// Generated by CoffeeScript 1.10.0
(function() {
  var value;

  value = Math.asin(-1);

  console.log("The arc sine value of -1 is : " + value);

  value = Math.asin(null);

  console.log("The arc sine value of null is : " + value);

  value = Math.asin(20);

  console.log("The arc sine value of 20 is : " + value);

}).call(this);

Now, open the command prompt again, and run the CoffeeScript file as shown below.

c:\> coffee math_asin.coffee

On executing, the CoffeeScript file produces the following output.

The arc sine value of -1 is : -1.5707963267948966
The arc sine value of null is : 0
The arc sine value of 20 is : NaN