unit circle

English

Noun

unit circle (plural unit circles)

1. (geometry) A circle of radius 1.
2. (trigonometry, the unit circle) The circle of radius 1 with centre at the origin, used in defining trigonometric functions.

Usage notes

• Unit circle is seldom used in the simple geometric sense, where "a circle of radius 1" is much more common.

Translations

circle of radius 1

• Finnish: yksikköympyrä
• French: cercle unité (fr) m
• German: Einheitskreis (de) m
• Italian: circonferenza unitaria f
• Swedish: enhetscirkel (sv) c
• Tagalog: isahing bilog

circle of radius 1 with centre at the origin, used in trigonometry

• Czech: jednotková kružnice f
• Dutch: eenheidscirkel m
• Finnish: yksikköympyrä
• French: cercle trigonométrique (fr) m, cercle unité (fr) m
• German: Einheitskreis (de) m
• Hungarian: egységkör (hu)
• Italian: circonferenza unitaria f
• Polish: okrąg jednostkowy m
• Russian: едини́чный круг m (jediníčnyj krug)
• Swedish: enhetscirkel (sv) c
• Tagalog: isahing bilog

See also

• unit hyperbola
• unit sphere