This document is no longer available beyond version 4. Information can now be found here: ATAN for version 5

This documentation page references Altium NEXUS/NEXUS Client (part of the deployed NEXUS solution), which has been discontinued. All your PCB design, data management and collaboration needs can now be delivered by Altium Designer and a connected Altium 365 Workspace. Check out the FAQs page for more information.

Parent page: System Query Functions - Trigonometry Functions


Returns a (real) number whose value is equal to the angle of the inverse tangent of the number specified by the parameter's numeric value; that angle is in units of radians (and not degrees).


ATAN(X : Number / Numeric_String) : Number

Example Usage

Returns 0.

Returns 0.7854.

Returns 1.1903.