Page 63 - Math Grade 11 (Advance)

PROEUS DARA

~
5 as m; sa e ~~as m; t,a ~ m Qbl ~t,a

~~~s--~;~'v·c~·~--~,~,~~\\N'~~

t ru h Ul 2 hl RJl3 u'i:Hi tUl ttl n tu~ ffU S h

1M~ fflatfi t ffHUl'i:fllJihl ru 1 t si Qh t tuJ l&ffi
1
ml=i 1 '1 nhtdnt2gtruhahwnnntu~mash
"' "' ;j"
1
1 tu~m~tfit mM'i:fllJi ttHl5'i:fl2 9L13~ tdJh 1 t9J n '1

rutlmtBtLn9 1 ttiJttsil sinx sil cosx

dl hl~ffla~tfflrul'i:fl1j1tf:lruttfflrunU~13tUl tll'i:fl2llh : acosx + bsinx = c '1
u

Oe1 \4 C» \4 C Cl ~ "'!Jo a
- utruwfU13fflH2gdlnw cos(x-8) =- tf:lru r = t.Ja+b , (r<!:O) 2w cosS =-,
r r
sinS=~ '1 tE:ilru cosS = ~ sl§'i a= rcosS , sinS=~ slf3'i b = rsin8 '1
r r tJ r tl
M~ffl~ acosx+bsinx = rcos8cosx+rsin8sinx = c
c
r( COS X COS 8 + sinxsin 8) = C rcos(x 8) = c U cos(x- 8) = - '1
"'" r
<:» c
- tE:IlgUtiJltllfU13ffll cos(x-8) =- ffi13m132 cosx = cosa '1
r u n
3tntnUul 1 tE:IlgLtiJltllhl~ffll sinx+ J3cosx = 0 (1)

r;-:-;:; a 1 . b J3 0 Jt
t 1!1 m 2 r = "' l -r .J = 2 ' cos e = ~ = 2 ' sm e = ~ = 2 21 f3J 8 = 3 '1

M~ffl~ sinx+J3cosx = 2cos~sinx+2sin~cosx = 0

2( sinxcos~ + cosxsin~) = 0

2 sin ( x + ~) = 0 '!:l sin ( x + ~) = 0

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