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 [`Y` ]atan2[`X` ] |
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input | a selection of titles = coordinate Y (`Y` ) |

parameter | `X` = coordinate X |

output | the angle in radians (in [ - π , π ] ) between the positive x-axis and the ray from (0,0) to the point (x,y) |

New in: 5.1.21 See Mathematics Operators for an overview.