In the diagram, PR is a tangent to the circle at Q, QT//R...
In the diagram, PR is a tangent to the circle at Q, QT//RS,
40o
65o
85o
95o
Correct answer is D
In the diagram,
a = 50o (alternate angles)
b1 + a 35o = 180o (sum of angles on a straight line)
i.e; b1 + 50o + 35o
= 180v
b1 + 180o - 85o = 90o
But b2 = b1 = 95o (angles in alternate segement)
<QST = b2 = 95o
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