In the figure above PQRS is a circle with ST RQ... - JAMB Mathematics 1999 Question
A
70o
B
55o
C
40o
D
35o
correct option: b
PQRS is a cyclic quad
^P = 180 - 110 (opp ∠s of a cyclic quad)
^P = 70
In ΔPTS, ^S = ^T (base ∠s of Isc Δ)
∴^T = (180-70) / 2
= 110/2
= 55o
But ^T x(corr ∠)
∴x =55
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