All of the evidences that prove the prophethood of the prophet Muhammad (PBUH) also prove the existence of angels.

He who cannot deny all of the evidences of the prophethood of prophet Muhammad (PBUH) cannot deny the existence of angels. Alas! Who can deny the prophethood of this person whose prophethood has been proven with the witnessing of thousand proofs? And who can attribute lies to this person? And who can doubt about the words of this person? God forbid! We do not doubt about the existence of the people who are living in continents that we do not see but we believe them based on the narrations of the people who go there and of their observations; in the same way, we could not and should not doubt the news of especially the prophet Muhammad (PBUH), who travelled and saw the inner realm and other prophets and saints!