Code
matplotlib
import matplotlib.pyplot as plt
import numpy as np
x = np.linspace(0, 2 * np.pi, 100)
plt.plot(x, np.sin(x), label="sin", color="steelblue", linewidth=2)
plt.plot(x, np.cos(x), label="cos", color="coral", linestyle="--",
marker="o", markevery=10)
plt.title("Sine vs Cosine")
plt.xlabel("x")
plt.ylabel("amplitude")
plt.legend()
plt.grid(True, alpha=0.3)
plt.tight_layout()
plt.show()