title: Is the rotation matrix unique for a given rotation?
body: <p>I found two rotation matrices</p>
  
  <pre><code>rot1 = [    0.8736    0.2915   -0.3897;
             -0.4011    0.8848   -0.2373;
              0.2756    0.3636    0.8898]
  
  rot2 = [    0.9874   -0.1420   -0.0700;
              0.0700    0.7880   -0.6117;
              0.1420    0.5991    0.7880]
  </code></pre>
  
  <p>when multiplying the vector</p>
  
  <pre><code>wpt = [200 200 200] 
  </code></pre>
  
  <p>producing the same result</p>
  
  <pre><code>cpt = [155.0812 49.2660 305.8148] 
  </code></pre>
  
  <p>Can anyone explain this?</p>