WAEC - Mathematics (1997 - No. 31) | ExamPlay

WAEC - Mathematics (1997 - No. 31)

TR is the tangent to the circle PQR with centre O. Find the size of ∠PRT

44^o

46^o

60^o

74^o

118^o

Explanation

Reflex < POQ = 360° - 148° = 212°

< PRO = 360° - 330° = 30°

But < ORT = 90° \(\implies\) < PRT = 90° - 30° = 60°

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