modeling-app/docs/kcl/atan2.md

---
title: "atan2"
excerpt: "Compute the four quadrant arctangent of Y and X (in radians)."
layout: manual
---

Compute the four quadrant arctangent of Y and X (in radians).



```js
atan2(y: number, x: number) -> number
```

### Tags

* `math`


### Arguments

| Name | Type | Description | Required |
|----------|------|-------------|----------|
| `y` | `number` |  | Yes |
| `x` | `number` |  | Yes |

### Returns

`number` 


### Examples

```js
sketch001 = startSketchOn('XZ')
  |> startProfileAt([0, 0], %)
  |> angledLine({
       angle = toDegrees(atan2(1.25, 2)),
       length = 20
     }, %)
  |> yLineTo(0, %)
  |> close(%)

extrude001 = extrude(5, sketch001)
```

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