## Syntax
```mermaid
%%{init: {
'theme': 'base',
'flowchart': { 'padding': '7', 'nodeSpacing': '20', 'rankSpacing': '20' },
'themeVariables': {
'fontSize': '11px',
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flowchart LR
Start((START)) --> ATAN2[ATAN2]:::quoted
ATAN2 --> End((END))
```
## Purpose
The `ATAN2` SQL function returns the angle whose tangent is the quotient of two specified numbers. See also [[TAN]] and [[ATAN]].
Parameters:
- y: the y coordinate of a point.
- x: the x coordinate of a point.
Returns: A number which represents the angle whose tangent is the quotient of two specified numbers.
## Examples
`ATAN2` retrieves the angle of the tangent of the point (2, 0):
```sql
select atan2(0, 2)
--------
0
```