Try to make an anchor to a tab like this.
<a href='#' id='go_to_tab_nr_2'>Go to tab Nr. 2</a>
And with this little jQuery it will work:
$('#go_to_tab_nr_2').click(function(){
$( "li.responsive-tabs__list__item:nth-child(2)" ).trigger( "click" );
});
The trick ist to simulate a click on the real trigger.