ReferenceSQL language referenceFunctionsBuilt-in functionsAlphabetical list of built-in functionstan functionOn this pagetan function Applies to: Databricks SQL Databricks Runtime Returns the tangent of expr. Syntax tan(expr) Arguments expr: An expression that evaluates to a numeric expressing the angle in radians. Returns A DOUBLE. Examples SQL> SELECT tan(0); 0.0 Related functions tanh function cos function sin function