unit circle


Definition of unit circle

: a circle having a radius of 1

Examples of unit circle in a Sentence

Recent Examples on the Web Some may fall inside the unit circle, others right on it, and still others outside it. Quanta Magazine, "Mathematician Measures the Repulsive Force Within Polynomials," 14 May 2020 Since going a distance π takes you halfway around the unit circle, cos(π)=-1 and sin(π)=0, so eiπ=-1. Lorenzo Sadun, Slate Magazine, "Finding Pi Outside of the Circumference," 14 Mar. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'unit circle.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of unit circle

1852, in the meaning defined above

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Time Traveler for unit circle

Time Traveler

The first known use of unit circle was in 1852

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Cite this Entry

“Unit circle.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unit%20circle. Accessed 4 Aug. 2020.

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