I would just like to point out the errors in logic of Angelus' 2 sentences, in red, above. He's saying that Trent didn't say belief in the Trinity/Incarnation is necessary for justification. But the entire Chapter VI paragraph is full of words/phrases which reference these 2 doctrines. (See words in bold).
As far as I've seen on this thread, Angelus refused to answer the question about whether he holds that explicit belief in the Holy Trinity and Incarnation are necessary for justification / salvation. Let's say we grant that Trent did not say whether this belief had to be explicit. In that case, by saying either yes or no, Angelus would not be "contradicting Trent", so he could have answered the question without fear of contradicting Trent. So this was a ruse to avoid having to answer the question.
So, what of it, Angelus, yes or no, is explicit faith in the Holy Trinity and Incarnation necessary for salvation? If you refuse to answer again, I will proceed as if your answer is no ... since there's no other explanation for your refusal to answer.