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WAEC - Mathematics (1989 - No. 41)
In the diagram above, O is the center of the circle. If ∠POR = 114
o
, calculate ∠PQR
123
o
118.5
o
117
o
114
o
54
o
Explanation
Reflex POR = 2PQR
Reflex PQR = 360
o
- 114
o
= 246
o
PQR = 246/2 = 123
o
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