arc AB is 60
arc DB is 180 (half the circle)
so arc DA is 180-60=120
angle dba is half that = 60
Sarah L.
asked • 03/12/21Circles With and Without Coordinates #4
is a diameter of circle O. If m∠ACB = 30°, what is m∠DBA?
A.
30°
B.
50°
C.
60°
D.
70°
E.
90°
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