"A Simple Formula to Calculate Azimuth without a Two-Argument Arctangen" by Thomas H. Meyer and Jacob Conshick
 

Document Type

Article

Disciplines

Civil Engineering

Abstract

Calculating azimuths from planimetric coordinates is complicated when the available implementations of inverse trigonometric functions have ranges spanning only 180° instead of 360° as azimuth requires. A tangent half-angle formula is used to derive a formula with only one special case (due South) that computes azimuth for the whole circle.

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