NOTE: The screenshots below are from an iOS device. But the feature is very similar on Android devices.
For example, here is part of my Ancestors with Tasks list (gotten to by tapping Tasks at the bottom of the screen on iOS and by tapping the 3 lines in the top left and then Ancestors with Tasks on Android.) I have no idea who Jefferson Franklin Echerd is or how I might be related. So I tap his name on the list, which takes me to his details page.
From his details page, I tap the 3 dots in the top right, whether on Android or iOS. The only differences in Android from the screen shot below is that the dots are a vertical stack and in a green bar rather than white.
I click View My Relationship in the list.
And I see both the handy-dandy diagram AND words telling me what the relationship is so I can better decide whether I feel this person is closely enough related to me that I want to work on his record.
I imagine they'll get to this on the web interface one of these days, but for now the mobile apps are the place to see it. Often, when I am working on the web interface on a more distantly-related family, I have the mobile tree open too in case I want to check a relationship.