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Vesnalui [34]
3 years ago
11

How do you find the value of variables in a circle? Number 9?

Mathematics
1 answer:
irakobra [83]3 years ago
3 0
A is half of the arc angle 108 so a = 54.
b is half of the arc angle 60 so b = 30.
c is identical to the angle that's missing from the triangle with a and b in it.
so, a + b + c = 180
54+60+c = 180
c = 180-54-60 = 66
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