How to Navigate setRoot from Tab1 to Tab2

In Ionic 3…
i am having 2 Tabs

Tab1 contains 4 pages
Tab2 Contains 5 pages…

i am setRoot from Tab1-2nd Page to Tab2-total AllPages is my requirement … i am getting Tab2-1st Page only is active and remaining pages are Tab1 pages

How to setRoot completely from Tab1 to Tab2 without strucking the pages ?