atan

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