In the figure , if \frac{NT }{AB} = 9 /5 and if MB = 10, find MN.

RRB NTPC Mains or Stage 2 Model Paper 9 with solutions

Question : 13 of 120

Marks: +1, -0

In the figure , if

{NT }/{AB} = 9 /5

and if MB = 10, find MN.

Solution:

(d) ∠MBA = 180º – 95º = 85º
∠ AMB = Ð TMN ...(Same angles with different names)
∴Δ MBA – ΔMNT ......(AA test for similarity)

{MB}/{MN} ={AB}/{NT}

.......(proportional sides)

10/{MN} =59∴MN =90/5 = 18

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