5.html

<!DOCTYPE html>
<html ng-app="myApp">
<head>
  <title>AngularJS Button Manipulation</title>
  <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.8.2/angular.min.js"></script>
</head>
<body ng-controller="myCtrl">

  <button ng-show="showClickMe" ng-click="clickMe()">Click Me!</button>
  <button ng-click="hideMe()">Hide Me!</button>
  <button ng-click="showMe()">Show Me!</button>

  <script>
    var app = angular.module('myApp', []);
    app.controller('myCtrl', function($scope) {
      $scope.showClickMe = true;

      $scope.clickMe = function() {
        // Nothing happens when 'Click Me!' is clicked
      };

      $scope.hideMe = function() {
        $scope.showClickMe = false; // Hide 'Click Me!' button
      };

      $scope.showMe = function() {
        $scope.showClickMe = true; // Show 'Click Me!' button
      };
    });
  </script>

</body>
</html>