Page 65 - Math Grade 11 (Advance)

PROEUS DARA

n. 2sinx-3cosx = 3

2. cos2x- sin2x = -1

l='i. cosx + J3 sinx = 1

lli. cosx- J3 sinx = 3

b .
M'i:H'flHTl"WtSH'i:flSnw : acos x+bcosx+c = 0 , asm x+ smx+c = 0
. 2
2
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t~YjttiHUtfltilhl~ffUtti'tHS8 tl='i'Ui~ :
u
- ~H'rubhl~nu~tiTlctlhlihn~~tLn9 2

- mbH~l='iYS~tfiHlJl'Hl'Ultsn~snr~ x t~ru x ~ Y ~ t ... '1

- ~firuQ~Hl-QtiTlniYH~l='iYS~tfnM'HlUittlru~ '1

Ql ~ QJ eJ
- t~8LNltilhlYFn~i:it1J'i9 2 ttlru'i:flSHCJJln x ~ Y ~ t ... '1
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- runti hlttl rumsYnd s hlctlHSl='iYS1~t FnM'i:fl1n1 m lmdlbm~ run2 n.n21b nli
"' 1.1 1 lj lj "1.1 :;u <I 9 s
ttfi rut~ gLn.nrum'eauy~ hl~m~~cmn.n'i:flu; '1

"' .
t~8LNltilhl'i§f\1~ 4-cos2x-7smx = 0 '1

ffib t = sinx ttlru't:flsrun2M-lstsl '1
9 s
2
hl~f\1~ (1) Hl1JhlHhll 2t -7t + 3 = o , D. = 25 , r, = i , = 3 -@s
t
2
tdlbm ~run2 ru121tl' rn
:;u
s
9
<I

2
"' x r;; X r;;
c~gun.nruMYfna tan --(l-.v3)tan--.v3 = o '1
2 2
tl='iffib tan~= t hl~f\1~ (1) MHhl~ t -(l-J3)t-J3 = 0 t~8LNltilhl~fnHS8
2
( Jt)
Jt
r;;
r;;
.X
X
tl='iQlS t = -1 t = .v3 '1 t = tan- = -1 = tan -- , t = tan- = .v3 = tan- '1
1
2
1
2
' 2 4 2 3
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