Page 93 - Math Grade 11 (Advance)

PROEUS DARA

----7 ? ? "' __,. ~ ? ,. 7 7
OM'= x'i+y'j Sb OP'+OQ' = (xcosai+xsinaj)+(-ysinai+ycosaj)

7 7 7 ,. 7 ?
x'i + y'j = (xcosai + xsinaj) + (-ysinai + ycosaj)
7 7
= (xcosa- ysina)i + (xsina + ycosa)j
t!!191 mms : x' = xcosa- ysina ' y' = xsina + ycosa

' 1 J3 ' J3 1
x = -x--y y = -x+-y
2 2 2 2
Utrut!1rui5nUuHiHf:tHiHugfil~~tg;9 1 dlutrnbrutst'H~ '1

t!!lffitmnuunuutrut!1 run rugma94mih!j hl

I Jjl
lxl = [cos60° -sin60°j [-1] = 2 2 [-1]
lY] sin60° cos60° 3 J3 1 3
. [ -2 2

= [- ~ + 3fl = [3~- lJ '1
3 J3 3+J3
-+- --
2 2 2

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