DLMF:4.21.E10 (Q1712)

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DLMF:4.21.E10
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    Statements

    test
    tan ⁡ u ± tan ⁡ v = sin ⁡ ( u ± v ) cos ⁡ u ⁢ cos ⁡ v , plus-or-minus 𝑢 𝑣 plus-or-minus 𝑢 𝑣 𝑢 𝑣 {\displaystyle{\displaystyle\tan u\pm\tan v=\frac{\sin\left(u\pm v\right)}{% \cos u\cos v},}}
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    DLMF id
    DLMF:4.21.E10
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