chord function (Q123676358)

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function in trigonometry

• crd
• crd (function)

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Language	Label	Description	Also known as
English	chord function	function in trigonometry	crd crd (function)

Statements

instance of

trigonometric function

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subclass of

trigonometric function

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image

Crd plot 0 to π.svg
427 × 305; 7 KB

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defining formula

${\displaystyle \mathrm {crd} \ \theta ={\sqrt {(1-\cos \theta )^{2}+\sin ^{2}\theta }}={\sqrt {2-2\cos \theta }}=2\sin \left({\frac {\theta }{2}}\right)}$

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in defining formula

${\displaystyle \mathrm {crd} \ \theta }$

symbol represents

chord function

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${\displaystyle \sin \theta }$

symbol represents

sine

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${\displaystyle \cos \theta }$

symbol represents

cosine

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${\displaystyle \theta }$

symbol represents

central angle

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definition domain

closed interval from 0 to π

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image of function

closed interval from 0 to 2

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different from

chord

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sine

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Identifiers

Google Knowledge Graph ID

/g/11vhgxn1fn

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Sitelinks

Wikipedia(2 entries)

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• enwiki Crd (function)
• zhwiki 弦函數

Wikibooks(0 entries)

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Wikiquote(0 entries)

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Wikisource(0 entries)

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Wikiversity(0 entries)

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Wikivoyage(0 entries)

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Wiktionary(0 entries)

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Multilingual sites(0 entries)

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