How to deal with an angry spouse?
You must feel terrible :( I know it can be so hard in those bad situations! I know what it feels like to be where you are and feel so tired about all the crap, anger, resentment, and draining behavior your angry spouse is doing to you. It almost feels like you're against a wall and once there, it's impossible to get above water to take the high ground for a therapeutic response to his anger.
But you can empower yourself and start with a different word choice other than "deal"? When we deal with something, we deal with an inconvenience. We deal with a flat tire. We deal with a crappy boss at work. We deal with annoying customers.
I would suggest looking to trying to improve things with someone who suffers from anger, and in turn, help yourself feel better in a toxic situation. If he cannot follow your lead, it's time to make a decision and think about the reality that we are mortal, and our time really is unique in this whole mysterious thing in the universe, and abusive people have no right to ruin it for everyone else no matter what. We have choices even in the worst situations.
If the title read, "How do you improve your relationship with an angry spouse?" That implies an optimistic, loving, and someone who suffers and wants to feel safe with their spouse. It expresses concern because when we look to improve a relationship, it assumes that the underlying desire is that of mutual understanding, that we know someone we love suffers, and despite our best efforts to cope with it, we cannot effectively create a channel of communication to relate to one another. Thus, the choice of words and attitude indicate something more might be going on under the surface of the post.