How to work with radians?

[DK.7]

How to work with radians in HAL?

I include a math library

#include "math.h"

and trying to implement a formula which has radians

cleansignal = 3.0 * sin (radians (Count));

And CubeIDE gives me an error: undefined reference to` radians'

[TDK]

Math functions take radians as an input value. If your value is in degrees, you will need to convert it.

Assuming "Count" is in degrees:

cleansignal = 3.0 * sin (Count * 3.14159f / 180);