i am unsure, i dont know where to start :/
This is asking what is tan x approaching as x tends to pi/2 from the high side (from the right side going left)
It is approaching minus infinity.
Can you see that?
isnt pi/2 1.5? so there is a break which means it is DNE
Maybe this pic will help you to understand.
oh okay i didnt see the + which means to the right! thank you for your help