Plural of cotan; multiple cotangent values or instances of the cotangent function, using abbreviated notation.
From 'cotan' with the plural suffix '-s'. It's the shortened plural form used in mathematical notation and technical writing.
Mathematicians love abbreviations, and 'cotans' shows how you'll see 'sin', 'cos', 'tan', and 'cotan' in formulas—the plural forms are used when you're working with multiple angle measurements in a single calculation.
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