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TAN

The TAN function is used to calculate the tangent of a number. It takes a single numeric argument (angle in radians) and returns the tangent of that angle.

Syntax​

TAN(value)
  • value: A numeric expression (angle in radians) for which the tangent is to be calculated.

Examples​

Let's consider a table named SingleItem with the following schema:

CREATE TABLE SingleItem (id INTEGER);

Insert a row into the SingleItem table:

INSERT INTO SingleItem VALUES (0);

Example 1: Using TAN with float values​

SELECT TAN(0.5) AS tan1, TAN(1) AS tan2 FROM SingleItem;

Result:

    tan1    |    tan2
------------+---------------
 0.54630249 | 1.557407725

Example 2: Using TAN with NULL values​

SELECT TAN(NULL) AS tan FROM SingleItem;

Result:

  tan
-------
 (null)

Errors​

The TAN function requires a numeric value as its argument. Using non-numeric values or more than one argument will result in an error.

Example 3: Using TAN with non-numeric values​

SELECT TAN('string') AS tan FROM SingleItem;

Error: Function requires a numeric value.

Example 4: Using TAN with multiple arguments​

SELECT TAN(1.0, 2.0) AS tan FROM SingleItem;

Error: Function expects 1 argument, but 2 were provided.