# MySQL COS() function

## COS() function

**MySQL COS()** returns the cosine of a number where the number is given in radians.

This function is useful in -

- COS() is a fundamental trigonometric function used in mathematics, engineering, physics, and various scientific fields.
- In physics and engineering, COS() is used in the analysis of periodic waveforms.
- COS() is vital in fields like signal processing and electrical engineering for analyzing harmonic components in waveforms.
- In control systems engineering, COS() is used to model dynamic systems, especially those exhibiting oscillatory behavior.
- In computer graphics and animation, COS() is used to create smooth transitions and animations by manipulating angles and rotations.
- In electrical engineering, COS() is crucial for understanding and analyzing alternating current (AC) circuits, which are fundamental in power distribution.
- COS() is utilized in the study of vibrations, oscillations, and wave propagation in various physical systems.

**Syntax:**

COS(N);

**Argument:**

Name | Description |
---|---|

N | A number whose cosine value is to be retrieved. |

**Syntax Diagram:**

**MySQL Version: 8.0**

**Example**

Code:

```
SELECT COS(1);
```

**Explanation:**

The above MySQL statement will return the cosine of the number specified as an argument.

Output:

mysql> SELECT COS(1); +------------------+ | COS(1) | +------------------+ | 0.54030230586814 | +------------------+ 1 row in set (0.01 sec)

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https://www.w3resource.com/mysql/mathematical-functions/mysql-cos-function.php

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