3 years ago

Helppppppppppp please

Mathematics

1 answer:

LenaWriter [7]3 years ago

3 0

Answer:

x = 60°

Step-by-step explanation:

AOB Center: O AB: diameter

arc ADB = 180°

arc DB = 180 - arc AD = 80°

x = 1/2 x ( arc DB + arc AC) = 1/2 x (80 + 40) = 60°

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