Q6. In figure, if OAB = 40°, then find ACB
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Answer:
∠ ACB = 50°
Step-by-step explanation:
∠ OAB = ∠OBA = 40°
∴ ∠ O = 180° - (40° + 40°)
= 100°
∴ ∠ACB = 100° / 2
= 50°
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