Given a circle, arc ab = 38 degrees, arc MB 42 degrees, find the angle mb.
| December 14, 2020 | education
If the angle is inscribed, then it is equal to 1/2 of the arc on which it rests. Therefore, the angle MB is equal to 1/2 of the arc MB. Then the angle MV = 1/2 • 42 = 21 °
Second case
If the angle is central, then it is equal to the arc. Therefore, the angle MB is equal to the arc MB.
Then the angle MB = 42 °
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