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In the given figure, O is the centre of the circle. If ∠BAO = 30° and ∠BCO = 50°, then ∠AOC is equal to:
In the given figure, O is the centre of the circle. If ∠BAO = 30° and ∠BCO = 50°, then ∠AOC is equal to:
Answer & Solution
Correct Answer:
Option
A
Let, Angle ABC = x
Then, Angle AOC = 2x
In Quadrilateral ABCO,
30° + 50° + x + 360° - 2x = 360°
⇒ x = 80°
So, 2x = 160°
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