atan (arctangent)

Type

Trigonometric Function

Purpose

The atan function calculates the arctangent of a numeric value. The result is an angle expressed in radians between -p/2 to p/2.

Syntax

atan( NUMERIC VALUE)

Returns

A numeric value.

Usage

The numeric value in a Trigonometric function can be a constant value (as shown below), a variable, a field value or an expression.

Examples

atan(500.3)

Returns:1.56879753 

atan(-359.4)

Returns:-1.5680139