Formula:7861

Digital Library of Mathematical Functions ID 22.18.E4

${\displaystyle{\displaystyle l(r)=(1/\sqrt{2})\operatorname{arccn}\left(r,1/\sqrt{2}\right).}}$

Symbols List

• ${\displaystyle{\displaystyle\operatorname{arccn}\left(\NVar{x},\NVar{k}\right)}}$:
• ${\displaystyle{\displaystyle r}}$: radius
• ${\displaystyle{\displaystyle l(r)}}$: arc length
 

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