DLMF:4.21.E29
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Math Formula Information
Formula: Failed to parse (syntax error): {\displaystyle \tan@{2z}=\frac{2\tan@@{z}}{1-\tan^{2}@@{z}}=\frac{2\cot@@{z}}{\cot^{2}@@{z}-1}=\frac{2}{\cot@@{z}-\tan@@{z}}.}
Name: DLMF:4.21.E29
Description:
Data Source
https://lct.wmflabs.org/w/index.php?title=Special:EntityPage/Q1731