When day came, the assembly of the elders of the people gathered together, both chief priests and scribes. And they led him away to their council, and they said, “If you are the Christ, tell us.” But he said to them, “If I tell you, you will not believe, and if I ask you, you will not answer. But from now on the Son of Man shall be seated at the right hand of the power of God.” So they all said, “Are you the Son of God, then?” And he said to them, “You say that I am.” Then they said, “What further testimony do we need? We have heard it ourselves from his own lips.” (Luke 22:66-71)
We might think Jesus gives an unclear answer or avoids the question here, but that doesn't seem to be the reaction of the people. There's no demand for him to answer the question again, instead they shout that they've heard the answer. The comment about the Son of Man sitting at the right hand of the power of God may seem a bit cryptic to us, but it wasn't to them. When Stephen says something similar in Acts 7 everyone covers their ears and start flinging stones at him. Jesus is making a claim to divinity and they don't like it.