DLMF:4.14.E7 (Q1659)

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DLMF:4.14.E7
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    Statements

    Defining formula
    cot ⁡ z = cos ⁡ z sin ⁡ z = 1 tan ⁡ z . 𝑧 𝑧 𝑧 1 𝑧 {\displaystyle{\displaystyle\cot z=\frac{\cos z}{\sin z}=\frac{1}{\tan z}.}}
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    DLMF id
    DLMF:4.14.E7
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    Symbols used
    cosine function
    Defining formula
    cos ⁡ z 𝑧 {\displaystyle{\displaystyle\cos\NVar{z}}}
    xml-id
    C4.S14.E2.m2addec
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    sine function
    Defining formula
    sin ⁡ z 𝑧 {\displaystyle{\displaystyle\sin\NVar{z}}}
    xml-id
    C4.S14.E1.m2addec
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