unit circle
Definition from Wiktionary, a free dictionary
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[edit] English
[edit] Noun
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Plural |
unit circle (plural unit circles)
- (geometry) A circle of radius 1.
- (trigonometry, the unit circle) The circle of radius 1 with centre at the origin, used in defining trigonometric functions.
[edit] Usage notes
- Unit circle is seldom used in the simple geometric sense, where "a circle of radius 1" is much more common.
[edit] Translations
circle of radius 1
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circle of radius 1 with centre at the origin, used in trigonometry
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