Page 178 - Grade 10 C.Math

16.2 prfO / b'/L (Height and Distance)
tnsf ltg cf]6f cj:yfx¿sf af/]df sIffsf]7fdf 5nkmn u/L ;d"xdf ;femf lgisif{ kTtf

nufpg'xf];\ .

-s_ ;dsf]0fL lqe'hdf ;dsf]0fafx]ssf Pp6f sf]0f / Pp6f e'hfsf] gfk yfxf ePdf afFsL
Curriculum Development Centre
e'hfx¿sf] nDafO s;/L kTtf nufpg ;lsG5 <
-v_ ljb\ofnosf] k|fª\u0fdf a;]/ ljb\ofnoleq /x]sf] vDaf jf dlGb/sf] prfO s;/L kTtf

nufpg ;lsG5 <

-u_ gbLsf] lsgf/df /x]sf] Pp6f ejgsf] dflyNnf] tnfaf6 gbLsf] rf}8fO s;/L kTtf nufpg
;lsPnf <

dflysf] klxnf] cj:yfsf af/]df xfdLn] cluNnf] kf7df cWoog ul/;s]sf 5f}F . bf];|f] / t];|f]
cj:yfdf j|mdzM prfO / b'/L kTtf nufpg'kg]{ Jofjxfl/s ;d:of 5g\ . ltgLx¿sf af/]df ca

xfdL 5nkmn ug]{ 5f}F .

(a) pGgtf+z sf]0f (Angle of Eleva on) M

dflysf] bf];|f] cj:yfdf ljb\ofnosf] rp/af6 w/x/fsf]
6'Kkf] df x]bf{ hldg;Fu ;dfgfGt/ x'g] /]vf;Fu b[li6 /]vfn]

agfpg] sf]0f pGgtf+zsf]0f xf] .

s'g} klg dflylt/ /x]sf] j:t'nfO{ tnaf6 x]bf{ b[li6/]vfn] hldg;Fu ;dfgfGt/ x'g]
/]vf;Fu agfPsf] sf]0fnfO{ pGgtf+z sf]0f (angle of eleva on) elgG5 .

(b) cjglt sf]0f (Angle of Depression) M

dflysf] t];|f] cj:yfdf s'g} Pp6f ejgaf6 gbLsf] lsgf/fdf

x]bf{ cjnf]sgstf{sf] cfFvf / gbL lsgf/fsf] laGb' hf]8\g]
b[li6 /]vfn] lIflth;Fu agfPsf] sf]0f cjglt sf]0f xf] .

s'g} cUnf] :yfgaf6 xf]rf] efudf /x]sf] s'g} j:t'nfO{
x]bf{ b[li6/]vfn] lIflth /]vf;Fu agfPsf] sf]0fnfO{

cjglt sf]0f (angle of depression) elgG5 .

;Fu}sf] lrqsf ABC cjglt sf]0f xf] eg] BCD pGgtf+z sf]0f xf] . hxfF AB -lIflth /]vf_

175 ul0ft, sIff – 10