JavaScript Math cos() Method
Last Updated :
15 Jul, 2024
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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.
Return Value:
- The Math.cos() function returns the cosine of the given numbers which range from -1 to 1.
Example: This example returns the cosine of 0.
console.log("The cos of 0 : " + Math.cos(0));
Output
The cos of 0 : 1
Example 2: This example returns the cosine of 010.
console.log("Result : " + Math.cos(010));
Output
Result : -0.14550003380861354
Example 3: When 1 is passed as a parameter.
console.log("Result : " + Math.cos(1));
Output
Result : 0.5403023058681398
Example 4: When PI is passed as a parameter.
console.log("Result : " + Math.cos(Math.PI));
Output
Result : -1
Example 5: When Input is in degrees (not in radians)
const degree = 90;
console.log(
"cos(" + degree + ") = " + Math.cos((Math.PI * degree) / 180));
Output
cos(90) = 6.123233995736766e-17
Supported Browsers:
- Chrome 51
- Edge 15
- Firefox 54
- Safari 10
- Opera 38
