JavaScript Math cos() Method
Last Updated :
01 Aug, 2023
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:
Math.cos(value)
Parameters: This function accepts a single parameter as mentioned above and described below:
- 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.
Example: This example returns the cosine of 0.
Javascript
console.log( "The cos of 0 : " + Math.cos(0));
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Example 1: This example returns the cosine of 010.
Javascript
console.log( "Result : " + Math.cos(010));
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Output
Result : -0.14550003380861354
Example 2: When 1 is passed as a parameter.
Javascript
console.log( "Result : " + Math.cos(1));
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Output
Result : 0.5403023058681398
Example 3: When PI is passed as a parameter.
Javascript
console.log( "Result : " + Math.cos(Math.PI));
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Example 4: When Input is in degrees (not in radians)
Javascript
const degree = 90;
console.log(
"cos(" + degree + ") = " + Math.cos((Math.PI * degree) / 180));
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Output
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.
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