Answer: y=31.97°
Explanation: We can use trig ratios to find y and they are SohCahToa.
We can use Sin y, because when y is the reference angle, the 9 cm side is the opposite and the 17cm is always the hypotenuse.
We must take the inverse of Sin (9/17) to get about 31.9657, which we can round to 31.97°.
I think it would be something like this: x-80 = (x*2)+12
30 = arc BC / 2
arc BC = 2(30)
arc BC = 60
answer
D. 60
C because it’s just it srry if it’s not but I think it is