# In figure 3.93, m

(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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