DLMF:4.42.E5 (Q1993)

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DLMF:4.42.E5
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    Statements

    test
    c 2 = a 2 + b 2 - 2 ⁢ a ⁢ b ⁢ cos ⁡ C , superscript 𝑐 2 superscript 𝑎 2 superscript 𝑏 2 2 𝑎 𝑏 𝐶 {\displaystyle{\displaystyle c^{2}=a^{2}+b^{2}-2ab\cos C,}}
    0 references
    DLMF id
    DLMF:4.42.E5
    0 references
    Symbols used
    cosine function
    test
    cos ⁡ z 𝑧 {\displaystyle{\displaystyle\cos\NVar{z}}}
    xml-id
    C4.S14.E2.m2aadec
    0 references
    Q11258
    test
    a 𝑎 {\displaystyle{\displaystyle a}}
    xml-id
    C4.S42.XMD10.m1bdec
    0 references
     
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