TAN Function in Oracle SQL – PLSQL

The TAN function in Oracle SQL / PLSQL is used to calculate tangent of numeric value where numeric value is provided in radian format.

It’s mathematically equal to TAN(N).

Syntax for the TAN function in Oracle SQL / PLSQL is:

SELECT TAN(radian)
FROM table_name;

Let’s take an example for understanding:

Suppose we want to get the tangent of 30 degree.

SELECT TAN(30*22/(7*180))
FROM dual;

The output of the above statement will be:

Notice that we have changed 30 degrees into radians while passing it in TAN function.