Page 172 - Grade 10 C.Math

dfgf}F, ABC Pp6f lqe'h xf] h;df a, b, c ltg cf]6f e'hfx¿sf] nDafO A
x'g\ . e'hfx¿ a / b larsf] sf]0f ACB lbOPsf] 5 . AD  BC
b
lvrfF} . To;kl5 ABD / ACD b'O{ cf]6f ;dsf]0fL lqe'hx¿ x'g\ . c
h
h;df AD = h 5 .
B C
ca ;dsf]0f ADC df C nfO{ k|;ª\u sf]0f dfGbf, D a
Curriculum Development Centre
 

cyjf h = b SinC x'G5 .

ca ABC sf] If]qkmn (A) = cfwf/ x prfO x'G5 .

= BC x AD

= a.b SinC

ABC sf] If]qkmn (A) = ab sin C ju{ PsfO x'G5 .

o;}u/L tn lbOPsf km/s km/s lqe'hsf] If]qkmn kTtf nufpg] ;"q kTtf nufpg'xf];\ .

-s_ B a C -v_ A -u_ A

 c
c c b
 C
B a B C
A a

lbOPsf] lqe'h clwssf]0fL eP tfklg dflysf] ;"q nfu' x'G5 .

h:t} M lrq -s_ df ABC sf] If]qkmn (A) = ac sin

lrq -v_ df ABC sf] If]qkmn (A) = ac Sin

lrq -u_ df ABC sf] If]qkmn (A) = bc SinA x'G5 .
A

pbfx/0f 1
65°
lbOPsf lqe'hsf] If]qkmn kTtf nufpg'xf];\ M 8cm

55°
B C
12 cm

169 ul0ft, sIff – 10