DLMF:4.21.E5 (Q1707)

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DLMF:4.21.E5
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    Statements

    Defining formula
    cot ⁡ ( u ± v ) = ± cot ⁡ u ⁢ cot ⁡ v - 1 cot ⁡ u ± cot ⁡ v . plus-or-minus 𝑢 𝑣 plus-or-minus 𝑢 𝑣 1 plus-or-minus 𝑢 𝑣 {\displaystyle{\displaystyle\cot\left(u\pm v\right)=\frac{\pm\cot u\cot v-1}{% \cot u\pm\cot v}.}}
    0 references
    DLMF id
    DLMF:4.21.E5
    0 references
    Symbols used
    cotangent function
    Defining formula
    cot ⁡ z 𝑧 {\displaystyle{\displaystyle\cot\NVar{z}}}
    xml-id
    C4.S14.E7.m2adec
    0 references
     
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