Hi!! I tried to post this earlier but I don't think it got uploaded, but if it did I'm sorry for a double post ! Either way, I'm really confused on the different theorems of the triangles and circles. I just really struggle with the terms and especially proving them (which is a big part of my course). I can understand the really simple questions, but with those that require you to figure out which theorem(s) to use I get dizzy.. Does anybody have tips on how to think?

On a more specific note, here is a question I've been struggling with for a while. I solved a), but b) just gives me a headache:') it says "In the figures, the distances AB and AC are parts of tangents to the circle. Determine the angle alpha."

On a more specific note, here is a question I've been struggling with for a while. I solved a), but b) just gives me a headache:') it says "In the figures, the distances AB and AC are parts of tangents to the circle. Determine the angle alpha."