What is the measure of 2 ABC ?
B
a
60°
60°
A
С
А
30°
B
60°
90°
D impossible to determine
![What is the measure of 2 ABC B a 60 60 A С А 30 B 60 90 D impossible to determine class=](https://us-static.z-dn.net/files/d59/2b25ebb9ad0e09edfbe5e2c78c841a1f.png)