DLMF:19.30.E10
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Math Formula Information
Formula: Failed to parse (syntax error): {\displaystyle r^{2}=2a^{2}\cos@{2\theta},}
Name: DLMF:19.30.E10
Description:
Data Source
https://lct.wmflabs.org/w/index.php?title=Special:EntityPage/Q6685