title: python matplotlib polar plot
body: <p>I am using the following code to create a polar plot of the sinus.</p>
  
  <pre><code>import numpy as np
  import matplotlib.pyplot as plt
  
  
  theta = np.arange(0, 2*np.pi, .01)[1:]
  plt.polar(theta, sin(theta))
  plt.show()
  </code></pre>
  
  <p>which produces:</p>
  
  <p><a href="https://i.stack.imgur.com/e0c4t.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/e0c4t.png" alt="enter image description here"></a></p>
  
  <p>but I want to plot it symmetrically, like this:</p>
  
  <p><a href="https://i.stack.imgur.com/Wt7El.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Wt7El.png" alt="enter image description here"></a></p>
  
  <p>How can I get the result I want?</p>