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WAEC - Mathematics (1994 - No. 39)
In the diagram above, PQ is the tangent to the circle RST at T.|ST| = ST and ∠RTQ = 68
o
. Find ∠PTS
68
o
62
o
61
o
56
o
34
o
Explanation
∠TSR = 68
o
∴ STR =
180-68
/
2
= 56
o
PTS= 180-(68+56) = 56
o
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