Where does “arctan” come from?

arctan (English) comes from English ARC, from Middle English ark, from Old French arc, from Latin arcus, from Latin solium, from Proto-Indo-European sodyom, from Proto-Indo-European sḗd- — to sit.

arctan (English): Abbreviation of arctangent

Definitions

  1. Abbreviation of arctangent

Ancestry of “arctan”, step by step

arctan traces back through two separate lines of ancestry.

via English ARC

StepLanguageWordMeaning
1EnglishARCAcronym of advanced reader's copy, a copy of a...
2Middle EnglisharkThe path of the sun across the sky
3Old Frencharcbow; arch
4Latinarcusarc, arch; bow; rainbow
5Latinsoliumseat, chair; throne, chair of state, official...
6Proto-Indo-Europeansodyom
7Proto-Indo-Europeansḗd-to sit

via English mul:tan

StepLanguageWordMeaning
1Englishmul:tan
Every word from Proto-Indo-European sḗd-
arctan — Etymology, Origin & Word History | Etymology Explorer