MySQL TAN function is one of the Numeric Functions useful for calculating the trigonometric Tangent of the specified expression. The mathematical formula for this tangent function equals the Length of the Opposite Side / Length of the Adjacent Side.
The basic syntax of the MySQL TAN Function is as shown below:
SELECT TAN (Numeric_Expression) FROM Source
To demonstrate this Numeric function, we are going to use the below-shown data

MySQL TAN Function Example
The TAN returns the trigonometric tangent values for any numeric data, and the following query shows multiple ways to use this method.
-- Tangent of Negative Value SELECT TAN(-5.64) AS `Tangent Value`; -- Tangent of Positive Value SELECT TAN(PI()) AS `Tangent Value`; -- Tangent of Numeric Expression SELECT TAN(6.55 + 5.95 - 7.15) AS `Tangent Value`; -- Tangent of string value SELECT TAN('2.76') AS `Tangent Value`; -- Tangent of String SELECT TAN('MySQL') AS `Tangent Value`;
As you can see, we used this TAN function to find the Tangent of different values.

This Numeric method also allows you to find the tangent of the table data. In this MySQL example, we are going to find the tangent value for all the records present in the Service Grade column.
SELECT Product, Color, StandardCost, Sales, TaxAmt, ServiceGrade, TAN(ServiceGrade) AS `Grade Tangent Value` FROM `numeric functions`;
