# atan2

Returns the four quadrant inverse tangent (in radians) for each element pair of the arguments.

## Syntax

R = atan2(y,x)

## Inputs

`y`- The opposite leg of a triangle.
`x`- The adjacent leg of a triangle.

## Outputs

- R
- The angle result (in radians).

## Examples

Scalar
inputs:

`R = atan2(1,-sqrt(3))`

`R = 2.61799388`

Matrix
inputs:

`R = atan2([2,-3;4,-5],[-3,4;5,-6])`

```
R = [Matrix] 2 x 2
2.55359 -0.64350
0.67474 -2.44685
```