alleryStart learning →A tangent from P has length 6 cm. A secant from P cuts the circle at A and B with PA = 4 cm. Find PB.
A12 cm
B9 cm
C8 cm
D10 cm
Answer & Solution
Correct answer: B. 9 cm
Tangent squared equals PA times PB, so 36 = 4 x PB and PB = 9 cm.
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