I have been trying to figure out this question for a while now, I don’t know if I’m overreacting or this question makes absolutely no sense. The topic is on inscribed and is so I could already make the assumption that angle B was 90°.
But other than that, there is no way for me to really tell that angle C and A are 45°.
Here is some Theorems I tried: complementary angles, Pythagorean, theorem, inscribed angle, angles subetended by arc, bisecting the arc.
The answer sheet insists that the right answer is 45° for angle C and A.
I just don’t know how I can be 100% sure that it is. I might be making a big deal out of this, but I just want to make sure.
The Picture should be below:
