<ngb-tabset>
<ngb-tab title="TAB 1" id="tab1">
  <ng-template ngbTabContent>
      <div class="tab-pane active" id="litaDados" role="tabpanel">
        <form method="post" id="dados" class="form-horizontal">
          <a class="btn btn-secondary"><i _ngcontent-c1 class="fa fa-plus" aria-hidden="true"></i>&nbsp;ABA 1</a>
            <div class="form-group">
             <p>ABA 1</p>
              <button type="button" title="GO" click="go()" </button>
            </div>
          </form>
      </div>
    </ng-template>
  </ngb-tab>

 <ngb-tab title="TAB 2" id="tab2">
  <ng-template ngbTabContent>
  <div class="tab-pane active" id="litaDados2" role="tabpanel">
    <form method="post" id="dados2" class="form-horizontal">
      <a class="btn btn-secondary"><i _ngcontent-c1 class="fa fa-plus" aria-hidden="true"></i>&nbsp;ABA 2</a>
        <div class="form-group">
         <p>ABA 2</p>
        </div>
      </form>
  </div>
  </ng-template>
  </ngb-tab>
</ngb-tabset>