def METHOD_NAME(self):
    l = LandmarkF()
    # default
    nose.tools.assert_equal(l.cos_obs_angle, 1)
    l.cos_obs_angle = 0.5
    numpy.testing.assert_almost_equal(l.cos_obs_angle, 0.5, self.precs[1])
    l.cos_obs_angle = -0.5
    numpy.testing.assert_almost_equal(l.cos_obs_angle, -0.5, self.precs[1])
    # Can technically go outside range of cosine
    l.cos_obs_angle = 1.5
    numpy.testing.assert_almost_equal(l.cos_obs_angle, 1.5, self.precs[1])
    l.cos_obs_angle = -1.5
    numpy.testing.assert_almost_equal(l.cos_obs_angle, -1.5, self.precs[1])
    l = LandmarkD()
    # default
    nose.tools.assert_equal(l.cos_obs_angle, 1)
    l.cos_obs_angle = 0.5
    numpy.testing.assert_almost_equal(l.cos_obs_angle, 0.5, self.precs[0])
    l.cos_obs_angle = -0.5
    numpy.testing.assert_almost_equal(l.cos_obs_angle, -0.5, self.precs[0])
    # Can technically go outside range of cosine
    l.cos_obs_angle = 1.5
    numpy.testing.assert_almost_equal(l.cos_obs_angle, 1.5, self.precs[0])
    l.cos_obs_angle = -1.5
    numpy.testing.assert_almost_equal(l.cos_obs_angle, -1.5, self.precs[0])