The goal marked Trincao's first as a Barca player.
He said afterwards, "I didn't need to score, I just did my job.
"Very happy to help the team with goals, defensively and offensively. I'm happy for the team and for the victory. I think we changed our attitude in the second half and that was the most important thing for the team.
"I think we were afraid of taking risks and in the next part we wanted to win and we won."