Page 170 - Grade 10 C.Math

PsfO 16
lqsf]0fldlt (Trigonometry)

16.0 k'g/fjnf]sg (Review)
Curriculum Development Centre
tn lbOPsf ;dsf]0fL lqe'hx¿df yfxf gePsf] efu (x) sf] dfg kTtf nufpg'xf];\ M

(a) (b) (c) (d)

x 60°
4 6 x 4 x 12

x 30°
5 6

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sIffdf k:tt ugxf; . o;/L k:tt u/sf ;f/fznfO lgDgfg;f/ ;fdfGoLs/0f ugxf; M
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dflysf ;dsf]0fL lqe'hx¿ (a) df kfOyfuf]/; ;fWosf] k|of]u ul/G5 eg] (b), (c) / (d) df
j|mdzM tan, sin / cos cg'kft / ltgLx¿sf larsf] sf]0fx¿sf] dfg k|of]u ul/Psf] 5 . o;nfO{
lgDgfg';f/ pNn]v ug{ ;lsG5 M A
;dsf]0fL ABC df A nfO{ k|;ª\u sf]0f dfGbf,
AB = cfwf/ (b), BC = nDa (P) / AC = s0f{ (h) x'G5 .
B C
nDa cfwf/ nDa
hxfF SinA =   , CosA =   / TanA =  
s0f{ s0f{ cwf/
k'gM oL cg'kftx¿sf Jo'Tj|md cg'kftx¿nfO{ lgDgfg';f/ n]Vg ;lsG5 M
   
    /

    x'G5 .

167 ul0ft, sIff – 10