Answer: 
Step-by-step explanation:
For convenience, I labeled some points as shown in the attached picture.
Also, I assume 
and 
are tangents to the circle.
(reflexive property)
(tangents drawn from a common external point are congruent)
(right angles are congruent)
Therefore, we know 
by HL.
Thus, by CPCTC,
This means the measure of minor arc AC is 
, and thus 
Answer:
The first one, third one, fourth one, and sixth one.
Step-by-step explanation:
I hope this helps!
Answer:
The answer is the fourth choice.
Step-by-step explanation:
The fourth choice is the only one that is supplementary.
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The equation you need to find x is,
.
Then solving for x gives you 
.
Hope this helps.
