AOC° = 2 × ADC°
karena AB adalah satu garis,
AOC° + BOC° = 180°
AOC° + 38° = 180°
AOC° = 180°-38°
AOC° = 142°
ADC° = AOC° ÷ 2
ADC° = 142° ÷ 2
ADC° = 71°
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sudut keliling=1/2*sudut pusat
=1/2*142
=71°
maaf klu salah
AOC° = 2 × ADC°
karena AB adalah satu garis,
AOC° + BOC° = 180°
AOC° + 38° = 180°
AOC° = 180°-38°
AOC° = 142°
AOC° = 2 × ADC°
ADC° = AOC° ÷ 2
ADC° = 142° ÷ 2
ADC° = 71°