Query_Lang-SystemFunctions_Trigonometry_ATANATAN_AD

Created: 九月 05, 2015 | Updated: 八月 13, 2021 | Applies to versions: 15.1, 16.0, 16.1, 17.0, 17.1, 18.0, 18.1, 19.0, 19.1, 20.0, 20.1 and 20.2

Parent page: System Query Functions - Trigonometry Functions

Summary

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).

Syntax

ATAN(X : Number / Numeric_String) : Number

Example Usage

ATAN(0)
Returns 0.

ATAN(1)
Returns 0.7854.

ATAN(2.5)
Returns 1.1903.