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WAEC - Mathematics (1990 - No. 34)
In the diagram above, PQRS s a cyclic quadrilateral, ∠PSR = 86
o
and ∠QPR = 38
o
. Calculate PRQ
58
o
53
o
48
o
43
o
38
o
Explanation
PQR = 180
o
- 86
o
= 94
o
∴PRQ = 180
o
- 94
o
- 36
o
= 48
o
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