DLMF:4.21.E23
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Math Formula Information
Formula: Failed to parse (syntax error): {\displaystyle \tan@@{\frac{z}{2}}=\pm\left(\frac{1-\cos@@{z}}{1+\cos@@{z}}\right)^{1/2}=\frac{1-\cos@@{z}}{\sin@@{z}}=\frac{\sin@@{z}}{1+\cos@@{z}}.}
Name: DLMF:4.21.E23
Description:
Data Source
https://lct.wmflabs.org/w/index.php?title=Special:EntityPage/Q1725