Answer:
Step-by-step explanation:
Assuming you're looking to find the missing angle measure, remember that in inscribed angles, such as angle DEF, the measure of the angle is half the measure of its intercepted arc. That means that the missing angle is half the measure of 228, which is 114, C.
Answer:
Welder A has a better deal because for each hour welder A would charger $75 while welder B would charge $80
Welder A:
300/4 = $75
Welder B:
240/3 = $80
(3, 5pi/3) = (3cos 5pi/3, 3sin 5pi/3) = (1.5, -2.6)