Formula:10465

Digital Library of Mathematical Functions ID 34.8.E2

${\displaystyle{\displaystyle\cos\theta=\frac{j_{1}(j_{1}+1)+j_{2}(j_{2}+1)-j_{3}(j_{3}+1)}{2\sqrt{j_{1}(j_{1}+1)j_{2}(j_{2}+1)}},}}$

Symbols List

• ${\displaystyle{\displaystyle\cos\NVar{z}}}$: cosine function
• ${\displaystyle{\displaystyle j,j_{r}}}$: non-negative integers or non-negative integers plus one half.
 

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