No. All three Faiths are monotheistic. All three faiths worship one God who created everything out of nothing. All Three Faiths know God has a divine Nature but not all Three Faiths understand there exists three persons in that Divine Nature
The Muslims don't believe in a Trinity. They have reason not to. In the Koran Ch 5 line 72-73 Allah slaps down the Christian idea of a Trinity.
.Here is the line-<
> "5.72": Certainly they disbelieve who say: Surely Allah, He is the Messiah, son of Marium; and the Messiah said: O Children of Israel! serve Allah, my Lord and your Lord. Surely whoever associates (others) with Allah, then Allah has forbidden to him the garden, and his abode is the fire; and there shall be no helpers for the unjust.
"5.73": Certainly they disbelieve who say: Surely Allah is the third (person) of the three; and there is no god but the one God, and if they desist not from what they say, a painful chastisement shall befall those among them who disbelieve.
Here are more translations of that line debunking any idea that there is a trinity involved. If you believe in a Trinity you are not a Muslim since they worship a different God that you do.
005.073 YUSUFALI: They do blaspheme who say: Allah is one of three in a Trinity: for there is no god except One Allah. If they desist not from their word (of blasphemy), verily a grievous penalty will befall the blasphemers among them.
PICKTHAL: They surely disbelieve who say: Lo! Allah is the third of three; when there is no Allah save the One Allah. If they desist not from so saying a painful doom will fall on those of them who disbelieve.
SHAKIR: Certainly they disbelieve who say: Surely Allah is the third (person) of the three; and there is no god but the one Allah, and if they desist not from what they say, a painful chastisement shall befall those among them who disbelieve.
So in Islam it is one God no Trinity involved. And that comes from Allah himself via the Koran.
If you are praying to a God that has other divine persons involved, you are praying to a different God than Allah. - tom