1. plural of cotan; the reciprocal of the tangent of an angle in trigonometry
Usage: mathematics; trigonometry; also written as cot or cotangent

Examples

• In trigonometry class, we calculated the cotans of several angles.
• The cotans function is the reciprocal of the tangent function.
• Students learned that cotans of 45° equals 1.
• The table showed cotans values for angles from 0° to 90°.