AngularJS ng-checked sets the checked attribute on the element, if the expression inside ng-checked is true.
<div ng-app="myApp" ng-controller='MyCtrl'>
Master checkbox<input type="checkbox" ng-model="master"><br>
Selecting above select this checkbox also: <input type="checkbox" ng-checked="master"><br>
</div>
<script src="//ajax.googleapis.com/ajax/libs/angularjs/1.5.3/angular.min.js"></script>
<script>
var module = angular.module('myApp', []);
module.controller('MyCtrl', function($scope) {});
</script>
