DLMF:4.42.E2
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Math Formula Information
Formula: Failed to parse (syntax error): {\displaystyle \cos@@{A}=\frac{b}{c}=\frac{1}{\sec@@{A}},}
Name: DLMF:4.42.E2
Description:
Data Source
https://lct.wmflabs.org/w/index.php?title=Special:EntityPage/Q1990