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If m/BOC= 27 and m/AOC = 47, then what is the measure of ZAOB? The diagram is not to scale.
D.
B
40
Ob 24
Oc
20
Od
54
74
30
e
Of

Sagot :

The measure of m ∠A0B is 20. Option C

How to determine the value of angle AOB

m ∠BOC = 27

m ∠AOC = 47

m∠A0B = unknown

But note that the sum of m ∠BOC + m ∠A0B = m ∠AOC  

We have,

27 +  m ∠A0B = 47

m ∠A0B = 47 - 27

m ∠A0B = 20

Therefore, the measure of m ∠A0B is 20. Option C

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