MySQL COS() Function

The COS() function in MySQL calculates the cosine of an angle. The angle must be specified in radians.

COS(): Definition and Usage

Cosine is a fundamental trigonometric function used in various mathematical, scientific, and engineering calculations. The COS() function makes it easy to incorporate cosine calculations into your MySQL queries. The input value represents the angle in radians, and the output is the cosine of that angle.

Syntax

COS(number)
      

Parameter Values

Examples

Calculating the Cosine of a Number

This example calculates the cosine of 2 radians.

SELECT COS(2);
      

-0.416146836547142
      

Calculating the Cosine of Pi

This example calculates the cosine of π (pi) radians, which is -1.

SELECT COS(PI());
      

-1.00000000000000