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

Numeric Value

Example 1

Example2

atan (arctangent)

Type

Trigonometric Function

Purpose

The atanfunctioncalculates the arctangent of a numericvalue. The result is an angle expressed in radians between -p/2 to p/2.

Syntax

atan(NUMERIC VALUE)

Returns

A numericvalue.

Usage

The numericvaluein a Trigonometricfunctioncan be aconstantvalue(as shown below), avariable, a fieldvalueor an expression.

Examples

atan(500.3)

Returns:1.56879753 

atan(-359.4)

Returns:-1.5680139