The answer to the problem is A
Answer:
angle C and angle D
Step-by-step explanation:
when those two angles are added together, they are to give a total angle of 180°
Answer:

Step-by-step explanation:
The equation is

Solve for x
we know that

substitute

so

Step-by-step explanation:
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Answer:
2nd and 4th on edg
Step-by-step explanation:
3+21pi / 2 +4
3-21pi / 2 -4