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21 votes
In the given figure find the value of x.​

In the given figure find the value of x.​-example-1
User David Stone
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3.0k points

2 Answers

15 votes
15 votes

قيمة x تساوي أربعين

أتمنى أن يساعد :)

User Fernando Cardenas
by
3.1k points
17 votes
17 votes


\large\underline{\sf{Solution-}}

Given that,

→ In triangle KML, P and N are the points on KK and KM respectively such that


\rm \longmapsto\:KN = c


\rm \longmapsto\:NM = b


\rm \longmapsto\:PN = x


\rm \longmapsto\:LM = a


\rm \longmapsto\: \angle \: KNP = 50 \degree


\rm \longmapsto\: \angle \: LKM = 50 \degree

Now,


\rm \longmapsto\: In \: \triangle \: LKM \: and \: \triangle \:KNP


\purple{\rm \longmapsto\:\angle \:PKN \: = \: \angle \:PKN \: \: \: \: \: \{common \}}


\purple{\rm \longmapsto\:\angle \:KNP \: = \: \angle \:KML \: \: \: \: \: \{each \: 50 \degree \}}


\purple{\rm\implies \:\triangle \:LKM \: \sim \: \triangle \:PKN \: \: \: (AA \: similarity)}


\bf\implies \:(KN)/(KM) = (PN)/(LM)


\rm \longmapsto\:(c)/(b + c) = (x)/(a)


\bf\implies \:x \: = \: (ac)/(b + c)


\textsf{Hope this helps!!}\\

User Danblundell
by
3.4k points