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grigory [225]
3 years ago
11

2. In the diagram below, angle AOB = 66°Find angle OAB, giving reasons for your answer.​

Mathematics
1 answer:
koban [17]3 years ago
3 0

Answer:

57°

Step-by-step explanation:

Δ AOB has 2 equal sides as radius of the circle, this is isosceles triangle

So the angles ∠OAB= ∠OBA

∠AOB= 66° and sum of 3 angles = 180°

So  ∠OAB= (180° - 66°)/2= 57°

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