cos()

The math.cos() method in Kotlin’s math class is used to calculate the cosine of an angle in radians.

Syntax

val cosineValue = cos(angle)

• angle: The angle in radians for which to calculate the cosine.
• The math.cos() method returns a value of type Double representing the cosine of the input angle.

Example

The example below demonstrates how to use math.cos() method to calculate the cosine of an angle:

import kotlin.math.*
fun main() {
    val angle = PI / 3.0  // 60 degrees in radians

    val cosineValue = cos(angle)
    println("The cosine of $angle radians is $cosineValue.")
}

This results in the following output:

The cosine of 1.0471975511965979 radians is 0.5000000000000001.