A tangent is drawn from point M to a circle, which meets the circle at T such that MT= 12 cm. A secant MAB intersects the circle at points A and B. If MA = 8 cm, what is the length (in cm) of the chord AB?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e. 10.
We know that
MT2 = MA × MB
⇒ 122 = 8 × MB
⇒ MB = 18
AB = MB - MA = 18 - 8 = 10 cm