Q. 153.8( 35 Votes )

In figure 3.93, m

Answer :

(1)Given: m(arc WY) = 44°,m(arc ZX) = 68°


We know that




(2)Given: WT = 4.8, TX = 8.0, YT = 6.4


We know that WT × TX = YT × TZ {Using secant-tangent theorem}


6.4 × TZ = 4.8 × 8


TZ = 6


(3)Given: WX = 25, YT = 8,YZ = 26


Let WT = x and TX = 25-x


WT × TX = YT × TZ


x(25-x) = 8 × 26


(x – 16)(x-9) = 0


WT = 16 or 9


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