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# Atan Function

### Syntax

atan (number)

or
the atan of <number>
### Description

Atan is a mathematical function that returns the trigonometric arctangent (inverse tangent) of a number in radians.
### Notes

### Examples

To get the arctangent of 20 in radians, type the following in the Message Box and press Enter:
atan (20)
The number 1.520838 appears in the Message Box. To get the arctangent of 20 in degrees, type this line in the Message Box and press Enter:
put atan (20)*PI/180

This text has been mechanically extracted from the Oracle Media Objects 1.0.4.9 MediaTalk Reference, © 1995 Oracle Corporation, and is provided here solely for educational/historical purposes.