Plotting of equations - Printable Version +- Python Forum (https://python-forum.io) +-- Forum: Python Coding (https://python-forum.io/Forum-Python-Coding) +--- Forum: General Coding Help (https://python-forum.io/Forum-General-Coding-Help) +--- Thread: Plotting of equations (/Thread-Plotting-of-equations) Plotting of equations - mudezda1 - Feb-11-2019 import numpy as np import matplotlib.pyplot as plt l= 1.5 m= 2.5 g= 9.81 d= 2.7 k= 9.08 angles = np.arange(360) / 180 * np.pi x = ((m * g)/(k * d)) * np.tan(angles) y = 1 - ((2 * l) / d) * np.sin(angles) plt.plot(x,y) plt.show() Im trying to plot these two equations but they wont come up, although if i plot eqution y by itself it does come up. My aim is to plot these two equations and note down where they meet. How could i do that? RE: Plotting of equations - scidam - Feb-13-2019 This is likely because tan(90 deg) is infinity. You need to exclude pi/2 (90 deg) and 3pi/2 (270 deg) from angles array. It could be done by using arange with different step, e.g. `arange(0, 360, 0.3)`