1. Chords PQ and RS of a circle extended externally intersect at point T. Length of the segment PT, if lengths of QT, RT and ST are 9 cm, 18 cm and 6 cm respectively, is
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By: anil on 05 May 2019 02.17 am
Given : QT = 9 cm , RT = 18 cm and ST = 6 cm To findĀ : PT = ? SolutionĀ : Using properties of secant in circle => $$(PT) imes (QT) = (RT) imes (ST)$$ => $$(PT) imes 9 = 18 imes 6$$ => $$PT = frac{108}{9} = 12$$ cm => Ans - (D)
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