MySQL Tutorial/Math Numeric Functions/TAN

TAN(X) returns the tangent of X, where X is given in radians.

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mysql> mysql> SELECT TAN(PI()); +-----------------------+ | TAN(PI()) | +-----------------------+ | -1.2246063538224e-016 | +-----------------------+ 1 row in set (0.00 sec) mysql> mysql> SELECT TAN(PI()+1); +-----------------+ | TAN(PI()+1) | +-----------------+ | 1.5574077246549 | +-----------------+ 1 row in set (0.00 sec)</source>