Inverse of the tangent of an angle.
\(\tan{(\textit{θ})} = \dfrac{y}{x}\)
\(\cot{(\textit{θ})} = \dfrac{1}{\textrm{tan}\space{(\textit{θ})}} = \dfrac{x}{y}\)
The cotangent of angle x is noted as “cot(x)” and is read as “cotangent of angle x“.