Karena AB diameter, maka <AOB = 180°
<ACB = ½ × AOB
<ACB = ½ × 180°
<ACB = 90°
<BAC = <ACB - <ABC
= 90° - 20°
= 70° (opsi B)
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Karena AB diameter, maka <AOB = 180°
<ACB = ½ × AOB
<ACB = ½ × 180°
<ACB = 90°
<BAC = <ACB - <ABC
= 90° - 20°
= 70° (opsi B)
SEMOGA MEMBANTU