def METHOD_NAME( strikeAngle, dipAngle ):
    '''
    Function to compute the plane unit normal vector given the strike and dip angles
    (in degrees). The strike should lie between 0 and 360 (negative ok) and the
    dip is restricted to lie between 0 and 90 measured in the direction such that 
    when you look in the strike direction, the fault dips to your right.
    '''
    deg_to_rad = np.pi/180
    strike = strikeAngle * deg_to_rad
    dip = dipAngle * deg_to_rad
    normal = [0.0, 0.0, 0.0] 
    normal[0] = -np.sin(dip)*np.sin(strike) # x component
    normal[1] =  np.sin(dip)*np.cos(strike) # y component
    normal[2] = -np.cos(dip)                # z component
    return normal