Heading into the game, the Gunners have failed to win since the turn of the year, having crashed out of the FA Cup.
They needed a win to get back on track and had to work hard to get a narrow 2-1 win over their rivals Tottenham at the Emirate Stadium.
As it happened
Arsenal made four changes from the side dumped out of the FA Cup by Manchester United on Sunday.
Tottenham made five changes from the side who laboured to an extra-time win over Tamworth.
Arsenal started the game with a lot of possession and dangerous moments, but it was Tottenham that hit the first blow from a Son Heung-min strike.
However, just five minutes before halftime, the Gunners struck back from their corner kick routine, which was headed in by Gabriel Magalhães.
Arsenal’s confidence grew after the equaliser and took the lead two minutes later from a counterattack, which Trossard scored with a venomous strike.
The Gunners missed a lot of chances in the second half but were able to hold on to their lead until the final whistle.