DLMF:4.21.E6 (Q1708)

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DLMF:4.21.E6
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    Statements

    Defining formula
    sin ⁡ u + sin ⁡ v = 2 ⁢ sin ⁡ ( u + v 2 ) ⁢ cos ⁡ ( u - v 2 ) , 𝑢 𝑣 2 𝑢 𝑣 2 𝑢 𝑣 2 {\displaystyle{\displaystyle\sin u+\sin v=2\sin\left(\frac{u+v}{2}\right)\cos% \left(\frac{u-v}{2}\right),}}
    0 references
    DLMF id
    DLMF:4.21.E6
    0 references
    Symbols used
    cosine function
    Defining formula
    cos ⁡ z 𝑧 {\displaystyle{\displaystyle\cos\NVar{z}}}
    xml-id
    C4.S14.E2.m2acdec
    0 references
    sine function
    Defining formula
    sin ⁡ z 𝑧 {\displaystyle{\displaystyle\sin\NVar{z}}}
    xml-id
    C4.S14.E1.m2acdec
    0 references
     
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