| Firebird Documentation Index → Firebird 2.5 Language Ref. Update → Internal functions → TAN() |
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Available in: DSQL, PSQL
Added in: 2.1
Description: Returns an angle's tangent. The argument must be given in radians.
Result type: DOUBLE PRECISION
Syntax:
TAN (angle)
If the external function
TAN is declared in your database, it will override the internal
function. To make the internal function available, DROP or ALTER the external
function (UDF).
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| Firebird Documentation Index → Firebird 2.5 Language Ref. Update → Internal functions → TAN() |