DLMF:34.8.E2 (Q9773)

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DLMF:34.8.E2
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    Statements

    test
    cos ⁡ θ = j 1 ⁢ ( j 1 + 1 ) + j 2 ⁢ ( j 2 + 1 ) - j 3 ⁢ ( j 3 + 1 ) 2 ⁢ j 1 ⁢ ( j 1 + 1 ) ⁢ j 2 ⁢ ( j 2 + 1 ) , 𝜃 subscript 𝑗 1 subscript 𝑗 1 1 subscript 𝑗 2 subscript 𝑗 2 1 subscript 𝑗 3 subscript 𝑗 3 1 2 subscript 𝑗 1 subscript 𝑗 1 1 subscript 𝑗 2 subscript 𝑗 2 1 {\displaystyle{\displaystyle\cos\theta=\frac{j_{1}(j_{1}+1)+j_{2}(j_{2}+1)-j_{% 3}(j_{3}+1)}{2\sqrt{j_{1}(j_{1}+1)j_{2}(j_{2}+1)}},}}
    0 references
    DLMF id
    DLMF:34.8.E2
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    Symbols used
    cosine function
    test
    cos ⁡ z 𝑧 {\displaystyle{\displaystyle\cos\NVar{z}}}
    xml-id
    C4.S14.E2.m2aadec
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    Q12709
    test
    j , j r 𝑗 subscript 𝑗 𝑟 {\displaystyle{\displaystyle j,j_{r}}}
    xml-id
    C34.S1.XMD1.m1adec
    0 references
     
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