title: Angular model for input
body: <pre><code>&lt;input type="checkbox" ng-model="master" ng-checked="false" name="one"&gt;&lt;br/&gt;
  &lt;input type="checkbox" ng-disabled="master" name="two"&gt;  
  </code></pre>
  
  <p>It works. But if i replace "checkbox" to "radio" it doesn't work. I tired to try make one radio disabled when other checked. </p>
  
  <p>Why it doesn't work? How to do this?</p>
  
  <p>thanks.</p>