The concern regarding clearance would be horizontal, parallel to the surface of the Earth, roughly perpendicular to the trunk, so perpendicular distance from the trunk would be what matters. If the branch were fifty miles long but only went straight up, there would be zero horizontal clearance.
The concern regarding clearance would be horizontal, parallel to the surface of the Earth, roughly perpendicular to the trunk, so perpendicular distance from the trunk would be what matters. If the branch were fifty miles long but only went straight up, there would be zero horizontal clearance.
you will find that if the branch snaps from the trunk, its perpendicular distance will be exactly the same number of milimeters.