MySQL COS Function

MySQL COS function is one of the Numeric Function which will calculate the trigonometry cosine of the specified expression. The mathematical formula for this function is: COS(x) = Length of the Adjacent Side / Length of the Hypotenuse. In this article we will show you, How to find cosine value in MySQL using Command Prompt, and Workbench with example.

MySQL COS Syntax

The basic syntax of the COS in MySQL is as shown below:

SELECT COS (Numeric_Expression)
FROM Source

To demonstrate this COS Numeric function, we are going to use the below shown data

MySQL COS Function Example 1

The COS Function is used to return the trigonometric cosine value of any numeric value. The following MySQL query will show multiple ways to use COS function.

-- MySQL COS Function Example

-- Cosine of Negative Value
SELECT COS(-10.57) AS `Cosine Value`;

-- Cosine of Positive Value
SELECT COS(7.96) AS `Cosine Value`;

-- Cosine of Numeric Expression
SELECT COS(1.75 + 2.25 - 4.00) AS `Cosine Value`;

-- Cosine of string value
SELECT COS('3.14') AS `Cosine Value`;

-- Cosine of String
SELECT COS('MySQL') AS `Cosine Value`;

From the below screenshot you can observe that, we used COS function to find the Cosine values of different values. Here, we assigned a new name to the result as ‘Cosine Value’ using ALIAS Column.

MySQL COS Example 2

In MySQL, COS Numeric Function also allows you to find the cosine values for the data in a table columns. In this example, we are going to find the cosine for all the records present in Tax Amount column, and Service Grade column.

-- MySQL Cosine Function Example
USE mysqltutorial;
SELECT Product, Color,
		StandardCost, Sales, TaxAmt,
        COS(TaxAmt) AS `Tax Cosine Value`,
        ServiceGrade,
        COS(ServiceGrade) AS `Grade Cosine Value`
FROM `numeric functions`;

OUTPUT

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