In the diagram, PTS is a tangent to the circle TQR at T. Calculate
- A.
120o - B.
70o - C.
60o - D.
40o
Correct Answer: Option B
Explanation
RTS = RQT (angle between a tangent and a chord at the point of contact is equal to the angle in the alternate segment) But R = Q + T = 180
RQT = 180o – (50 + 60)
= 180o – 110o
= 70o
Since RQT = RTS = 70o