# atan2()

Published Oct 17, 2023
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The `atan2()` method in Kotlin’s `math` class is used to calculate the angle (in radians) between the positive x-axis and a point specified by its Cartesian coordinates (x, y).

## Syntax

``````import kotlin.math.*
val angle = atan2(y, x)
``````
• `x`: The x-coordinate of the point.
• `y`: The y-coordinate of the point.

The `atan2()` method returns a value of type double representing the angle in radians. The result will be in the range of to π.

## Example

This example shows how use the `atan2()` method to calculate the angle between the positive x-axis and a point with coordinates (3.0, 4.0):

```import kotlin.math.*fun main() {  val x = 3.0  val y = 4.0
val angle = atan2(y, x)  println("The angle between the positive x-axis and the point (\$x, \$y) is \$angle radians.")}
```

The code above will result in the following output:

```The angle between the positive x-axis and the point (3.0, 4.0) is 0.9272952180016122 radians.
```