from sympy import *
from spb import *
x, t = symbols("x, t")
params = {t: (0, 0, 2*pi)}
# plot trajectories
p1 = plot_parametric(
    (cos(x), sin(x), (x, 0, 2*pi), {"linestyle": ":"}),
    (cos(2 * x) / 2, sin(2 * x) / 2, (x, 0, pi), {"linestyle": ":"}),
    params=params, use_cm=False, aspect="equal",
    show=False, use_latex=False)
# plot points
p2 = plot_list(
    ([cos(t)], [sin(t)], "A"),
    ([cos(2 * t) / 2], [sin(2 * t) / 2], "B"),
    rendering_kw={"marker": "s", "markerfacecolor": None},
    params=params, is_point=True, show=False)
(p1 + p2).show()