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WAEC - Mathematics (2005 - No. 39)
In the diagram PQRS is a circle, |PT| = |QT| and ∠QPT = 70
o
what is the size of ∠PRS?
40
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70
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80
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140
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Forklaring
∠QPT = ∠QTP = 70
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. Since ∠QTR = 140
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∠PRS = TSR = 1/2(180-40) = 70
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