Tabs not on RootPage

Is it possible to add in a blank project Tabs and without changing the RootPage?

Yes you can do that.

I have managed to set tabs but how can do that without changing the root page ?

in src/app/app.component.ts you can choice your root page
there is an attribute called

 rootPage

but when i don’t set it tabs won’t show. how do I set them up in a certain page

do you have an error in your console ?

No nothing they just don’t show