How to get the Trigger face which hit by other collider ?

Unity Engine
1

Hi,I want to get the Trigger face which hit by other collider ,But I found only in collider can get the other collider 's normal by collision.
How can i do in this situation: Trigger and Collider hit?

2

This is unfortunately not possible. A workaround that helps in many situations, is to compute the direction from the object with the trigger to the one that just entered it. This gives at least an approximation for where it may have entered, though not very precise at all.
Splitting the trigger collider is another option, but only if it doesn’t slow down your game too much.