Von Mises - degrees or radians

I am trying to create a model where one of the variables would be an angle. Therefore, I was intending to use a von Mises prior for this variable. However, I am not sure, when I define my variable, do i need to set its bounds to 0-2*pi, or to 0-360, i.e., does the von Mises distribution in Stan operate in degrees or radians? Thanks

You should use radians; see 23.1 Von Mises distribution | Stan Functions Reference

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