RRB Assistant Loco Pilot and Technician Model Paper 8 with solutions

Question : 11 of 75

Marks: +1, -0

PT is a tangent to a circle from an exterior point P and PAB is a secant intersecting the circle at A and B such that PA = 3 cm and PT = 6 cm. The measure of PB is

9 cm
10 cm
12 cm
8 cm

Validate

Solution:

PA· PB = P

T^2

⇒ 3(3 + x) = 36
⇒ x = 9
∴ PB = 3 + 9 = 12 cm.

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