Choose angle for tossing coins? (5,6)
I believe the answer is:
loose change
'coins?' is the definition.
'choose angle for tossing' is the wordplay.
'for tossing' indicates anagramming the letters (letters tossed around).
'choose'+'angle'='chooseangle'
'chooseangle' is an anagram of 'LOOSE CHANGE'.
(Other definitions for loose change that I've seen before include "little cash!" , "Coins kept for casual use" .)