DLMF:4.21.E21 (Q1723)

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Language	Label	Description	Also known as
English	DLMF:4.21.E21	No description defined

Statements

Defining formula

{\displaystyle{\displaystyle\sin\frac{z}{2}=\pm\left(\frac{1-\cos z}{2}\right)% ^{1/2},}}

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DLMF:4.21.E21

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cosine function

Defining formula

{\displaystyle{\displaystyle\cos\NVar{z}}}

C4.S14.E2.m2andec

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Defining formula

{\displaystyle{\displaystyle\sin\NVar{z}}}

C4.S14.E1.m2andec

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Defining formula

{\displaystyle{\displaystyle z}}

C4.S1.XMD8.m1cdec

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Sitelinks

Wikipedia(0 entries)

DRMF related sites(0 entries)

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