Page 182 - Grade 10 C.Math

dflg;sf] prfO CD = EB = 3 m A

DE = BC = 72m / ADE = ?

xfdLnfO{ yfxf 5,

25 3 m
Curriculum Development Centre

D E

3 m
C B
72 m

t;y{ pSt kmnnfO{ lg;fgf nufpg 30° sf] sf]0fdf d6\ofª\u|f xfGg'k5{ .

cEof; 16.2

1.(a) cjnf]sg laGb'af6 m b'/Ldf /x]sf] Pp6f vDafsf] 6'Kkf]df x]bf{ pGgtf+z sf]0f 30°
kfOof] eg] vDafsf] prfO kTtf nufpg'xf];\ .

(b) Ps hgf dflg;n] 30m sf] b'/Ldf /x]sf] ?vsf] 6'Kkf]df x]bf{ pGgtf+z sf]0f 60° kfpF5 .
olb dflg;sf] prfO 1.64m eP ?vsf] prfO kTtf nufpg'xf];\ .

(c) 1.7m cUnf] dflg;n] 25 m sf] b'/Ldf /xsf] :tDesf] 6'Kkf]df x]bf{ pGgtf+z sf]0f 45° kfof]
eg] :tDesf] prfO kTtf nufpg'xf];\ .

{
(d) Ps hgf ;j]{Ifsn] u'Dafsf] prfO gfKg rfxG5g\ . olb pSt u'Dafsf] 6'Kkf]nfO 40 ld6/
km/sdf /x]sf b'O{ cf]6f laGb'af6 cjnf]sg ubf{ j|mdz 45° / 60° sf] sf]0f kfP5 eg]
u'Dafsf] prfO slt xf]nf <

(e) 6 m cUnf] 3/sf] 5fgfaf6 Pp6f :df/s :tDesf] 6'Kkf] cjnf]sg ubf{ pGgtf+z sf]0f 60°
kfOof] . olb 3/ / :df/slarsf] b'/L 24 3 m ePdf :df/ssf] prfO kTtf nufpg'xf];\ .

2.(a) 60m Jof; ePsf] Pp6f j[Ttfsf/ v]tsf] lardf Pp6f :tDe ufl8Psf] 5 . pSt v]tsf]
kl/lwsf] Pp6f laGb'af6 ;f] :tDesf] 6'Kkf]df x]bf{ 60° sf] sf]0f aGb5 eg] pSt :tDesf]
prfO kTtf nufpg'xf];\ .

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