If @ # $ % & is decoded as ARGUE and α β γ δ & is SOLVE, what is δ @ $% &γ ∠?

According to given question,
@ → A
# → R
$ → G
% → U
& → E
and,
α → S
β → O
γ → L
δ → V
& → E
Replace the each capital from given relationship for δ @ $% &γ ∠, We will get
δ → V
@ → A
$ → G
% → U
& → E
γ → L
∠ → Y
Hence , the required answer will be VAGUELY .