Source @ github

Math.cos

cos — Returns the cosine of an angle measured in radians.

Description

Math.cos(number radians)

Parameters

Name Description Type Default Optional
radians number No

Return values

number. A number between -1 and 1 representing cosine of the angle.

Examples

Example #1 – cos example
console.log(Math.cos(0));             // 1
console.log(Math.cos(1));             // 0.5403023058681398
console.log(Math.cos(9));             // -0.911130261884677
console.log(Math.cos(Math.PI));       // -1
console.log(Math.cos(2 * Math.PI));   // 1
console.log(Math.cos(-1));            // 0.5403023058681398

External references