In a circle, chords PQ and TS are produced to meet at R. if RQ =14.4 cm, PQ = 11.2 cm, and SR = 12.8 cm, then the length of chord TS is:
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e 16 cm
| Application |
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By the secant theorem: QR × PR = RS × RT ⇒ 14.4 × (14.4 + 11.2) = 12.8 × (12.8 + ST) ⇒ 28.8 = 12.8 + ST ⇒ ST = 16 cm |
