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How do you find arc ab
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4 votes
How do you find arc ab

How do you find arc ab-example-1
User Kishore Sampath
by
6.0k points

1 Answer

4 votes
Use trigonometry to find the angle between the segments 3 and 6.
∠XOB = arccos(3/6) = 60°

The measure of arc AB is double that angle, since the figure is symmetrical about the line containing the segment of length 3.

m(arc AB) = 2·60° = 120°
User Sax
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6.3k points
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