caption: atan2 created: 20211019222810994 modified: 20211021222853123 op-input: a [[selection of titles|Title Selection]] = coordinate Y (<<.place Y>>) op-output: the angle in radians (in [ - π , π ] ) between the positive x-axis and the ray from (0,0) to the point (x,y) op-parameter: coordinate X op-parameter-name: X op-purpose: returns the angle in the plane (in radians) between the positive x-axis and the ray from (0,0) to the point (x,y), for [<<.place Y>>]atan2[<<.place X>>] tags: [[Filter Operators]] [[Mathematics Operators]] [[Binary Mathematics Operators]] [[Trigonometric Operators]] title: atan2 Operator type: text/vnd.tiddlywiki <<.from-version "5.1.21">> See [[Mathematics Operators]] for an overview. <<.operator-examples "atan2">>