DLMF:4.42.E6 (Q1994)

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DLMF:4.42.E6
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    Statements

    Defining formula
    a = b ⁢ cos ⁡ C + c ⁢ cos ⁡ B 𝑎 𝑏 𝐶 𝑐 𝐵 {\displaystyle{\displaystyle a=b\cos C+c\cos B}}
    0 references
    DLMF id
    DLMF:4.42.E6
    0 references
    Symbols used
    cosine function
    Defining formula
    cos ⁡ z 𝑧 {\displaystyle{\displaystyle\cos\NVar{z}}}
    xml-id
    C4.S14.E2.m2abdec
    0 references
    Q11258
    Defining formula
    a 𝑎 {\displaystyle{\displaystyle a}}
    xml-id
    C4.S42.XMD10.m1cdec
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    Q11259
    Defining formula
    b 𝑏 {\displaystyle{\displaystyle b}}
    xml-id
    C4.S42.XMD11.m1cdec
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    Q11260
    Defining formula
    c 𝑐 {\displaystyle{\displaystyle c}}
    xml-id
    C4.S42.XMD12.m1cdec
    0 references
    Q11262
    Defining formula
    B 𝐵 {\displaystyle{\displaystyle B}}
    xml-id
    C4.S42.XMD8.m1bdec
    0 references
     
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