The Javascript Math.cos() method is used to return the cosine of a number. The Math.cos() method returns a numeric value between -1 and 1, which represents the cosine of the angle given in radians. The cos() is a static method of Math, therefore, it is always used as Math.cos(), rather than as a method of a Math object created.
Syntax:Â
Math.cos(value)
Parameters: This function accepts a single parameter as mentioned above and described below:Â
- Value: This parameter is a number given in radians.
Returns: The Math.cos() function returns the cosine of the given numbers which range from -1 to 1.
Below is an example of the Math cos() Method.Â
Example: This example returns the cosine of 0.
Javascript
console.log("The cos of 0 : " + Math.cos(0)); |
The cos of 0 : 1
Example 1: This example returns the cosine of 010.
Javascript
console.log("Result : " + Math.cos(010)); |
Result : -0.14550003380861354
Example 2: When 1 is passed as a parameter.
Javascript
console.log("Result : " + Math.cos(1)); |
Result : 0.5403023058681398
Example 3: When PI is passed as a parameter. Â
Javascript
console.log("Result : " + Math.cos(Math.PI)); |
Result : -1
Example 4: When Input is in degrees (not in radians)
Javascript
const degree = 90;console.log("cos(" + degree + ") = " + Math.cos((Math.PI * degree) / 180)); |
cos(90) = 6.123233995736766e-17
We have a complete list of Javascript Math Objects methods, to check those please go through this Javascript Math Object Complete reference article.
