# Difference between revisions of "Documentation/How Tos/Calc: ATAN function"

From Apache OpenOffice Wiki

< Documentation | How Tos

OOoWikiBot (Talk | contribs) m (Bot: Adding Category: Documentation) |
OOoWikiBot (Talk | contribs) m (Robot: Automated text replacement %s) |
||

Line 35: | Line 35: | ||

* [[Documentation/How_Tos/Calc: Functions listed alphabetically|Functions listed alphabetically]] | * [[Documentation/How_Tos/Calc: Functions listed alphabetically|Functions listed alphabetically]] | ||

* [[Documentation/How_Tos/Calc: Functions listed by category|Functions listed by category]]}} | * [[Documentation/How_Tos/Calc: Functions listed by category|Functions listed by category]]}} | ||

− | [[Category: Documentation]] | + | [[Category: Documentation/Reference/Calc]] |

## Revision as of 08:57, 24 November 2009

## ATAN

Returns the inverse tangent (the arctangent) of a number.

### Syntax:

**ATAN(number)**

- returns the inverse trigonometric tangent of
, in other words the angle (in radians) whose tangent is**number**. The angle returned is between**number**and**-PI/2**.**PI/2**

- To return the angle in degrees, use the
function.**DEGREES**

### Example:

**ATAN(1)**

- returns
(**0.785398163397448**radians).**PI/4**

**DEGREES(ATAN(1))**

- returns
. The tangent of**45**degrees is**45**.**1**