code: def sampling_to_lfac_cfac(sampling):
      """Convert angular sampling to line/column scaling factor (aka LFAC/CFAC).
  
      Reference: `MSG Ground Segment LRIT HRIT Mission Specific Implementation`_,
      Appendix E.2.
  
      .. _MSG Ground Segment LRIT HRIT Mission Specific Implementation:
         https://www-cdn.eumetsat.int/files/2020-04/pdf_ten_05057_spe_msg_lrit_hri.pdf
  
      Args:
          sampling: float
              Angular sampling (rad)
  
      Returns:
          Line/column scaling factor (deg-1)
  
      """
      return 2.0**16 / np.rad2deg(sampling)
  
file_path: satpy/satpy/readers/_geos_area.py
imports: import numpy
  from pyresample import geometry
label_desc: Use image node_id 5 for calling a global function with example usage: sampling_to_lfac_cfac(sampling) and returns: unknown