Angle b° is an inscribed angle, then its measurement is the half of the arc:
m angle b° = arc/2
m angle b° = 60°/2
m angle b°=30°
b=30
Answer: Fourth option: 30
2x2=4 so if you multiply a number times another one it will add up to a greater number
Answer: is b Explanation: because the two angles have a sum of 90 degrees
4x4 = 8
2 (-2) = 0
4x4 - 2(-2) = 8
I hope this helped :)