Convert tan to cot directly on this exact page. This reciprocal intent does not need the full trigonometry hub.
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cot = 1 / tan
Zero input is undefined because division by zero is not allowed.
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Open AI assistant →Cotangent from Tangent Calculator
Quick answer
cot = 1 / tan. The result is undefined when tan is zero.
Examples
| Input | Output |
|---|---|
| 0.5 | 2 |
| 1 | 1 |
| 2 | 0.5 |
| 10 | 0.1 |
Common mistake
Cotangent and tangent are reciprocal functions, not inverse angle functions. This page does not calculate arctan or arccot.