After function, try Latin-American dance (5)
I believe the answer is:
tango
'latin-american dance' is the definition.
(I've seen this before)
'after function try' is the wordplay.
'after' says to put letters next to each other.
'function' becomes 'tan' (tangent, mathematical function).
'try' becomes 'go' (go is a kind of try).
'tan' next to 'go' is 'TANGO'.
(Other definitions for tango that I've seen before include "Argentine dance" , "Dance music" , "T in radio alphabet" , "Tonga (anag.)" , "Dance; letter T" .)