





'''simple docstring'''







import math

def    __UpperCamelCase	(	a    : float					,   a    : float     ) ->float:

 if initial_intensity < 0:
  raise ValueError('''The value of intensity cannot be negative'''     )
  # handling of negative values of initial intensity
 if angle < 0 or angle > 360:
  raise ValueError('''In Malus Law, the angle is in the range 0-360 degrees'''     )
  # handling of values out of allowed range
 return initial_intensity * (math.cos(math.radians(a     )     ) ** 2)


if __name__ == "__main__":
   import doctest

   doctest.testmod(name='malus_law')








'''simple docstring'''







from __future__ import annotations

from collections.abc import Iterator
class 			_lowercase						:







     def __init__( self    ,   A__    ) ->	None:
      snake_case				=			value
      snake_case				=			None
      snake_case				=			None




class 			_lowercase						:







     def __init__( self    ,   A__    ) ->	None:
      snake_case				=			tree







     def     UpperCamelCase			( self    ,   A__    ) ->	int:
      if node is None:
       return 0
      return node.value + (
          self.depth_first_search(node.left    ) + self.depth_first_search(node.right    )
      )







     def __iter__( self    ) ->	Iterator[int]:
      yield self.depth_first_search(self.tree    )


if __name__ == "__main__":
   import doctest

   doctest.testmod()

