import math


def angular_momentum(m, v, r, theta):
    """
       Calculates the angular momentum of an object 
       of mass 'm' whose linear velocity is 'v' and 
       radius of the path traced by the object is 'r',
       angle between velocity and radius is 'theta'
      
       Parameters
       ----------
       m : float
       v : float
       r : float
       theta : float
       
       Returns
       -------
       float
    """
    return m * v * r * math.sin(theta)