# atan(float)

From NWN Lexicon

Gets the arc tangent of a value.

## Contents

### Parameters

- fValue
- Value to return the arc tangent of.

### Description

Arc tangent is the inverse of the tan() function. Thus, given an fValue that is some ratio of the opposite side to the adjacent side of a right triangle, the atan function returns the appropriate angle (in degrees) of that triangle. The atan function returns a value from -90.0 to 90.0.

### Version

1.31

### See Also

functions: | tan |

author: Charles Feduke, additional contributor(s): Paul Catalano