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Verified answer
ACB = susut keliling = 35°sudut pusat ALB =2 x ACB
=2 x 35
=70°
∠ADB = ∠ keliling menghadap busur sama dengn ∠ pusat ALB
= 1/2 ∠ADB
=1/2 x 70
=35°
jadi ∠ACB =∠ADB