Atan2

From QED

< PlasmaWiki(Link to this page as [[PlasmaWiki/Atan2]])
Jump to: navigation, search
"Oh, right, tan − 1 sometimes gets the quadrant wrong. What a gyp."

atan2, a function of C and other sensible languages (but not mainstream mathematics?!?) is a sensible version of the arctangent tan − 1 which doesn't mess up the quadrant at inopportune times. It is defined as φ in the solution to

atan2(y,x) = φ, such that eiφ = x + iy

This page was recovered in October 2009 from the Plasmagicians page on Atan2 dated 21:46, 25 October 2006.

Retrieved from "https://qed.princeton.edu/main/PlasmaWiki/Atan2"
Personal tools