CT is a tangent to a circle at the point T on the circle. Chord AB of the circle is extended to meet the tangent CT at the point C. If m (AB) = 3 cm and m (BC) = 2.4 cm, find the length (in cm) of the tangent CT.
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 3.6.
CT2 = CB × CA = 2.4 × 5.4 = 12.96
⇒ CT = √12.96 = 3.6 cm