Page 194 - Math Grade 12 (Advance)

PROEUS DARA

1.a. thnwutifit
I .I
tt5 a Sb a dl~J:5~HOJh~ tSlg~J:5iJb~~
1 2
""~ -7 "' -7 'll
'
<)
<)
Hltidl~hUt5'li~ YL'liM~~ '1 t'i5~139~ nl sb n2 dl~ti9~
n.rm5mHsuci a sh a ,SlgiJ e n'lh1ti9~
6V 1 2 1 1

0 • 0
flitmfif.ft :
u
n. ~niJ~tJb'lii:5 (a ): x-2y+z = o Sb'i5l:5 a : 2x+3y-2z = 0
1 6\J 1 fAI 1

( tf:Hi5n cos53 · 55° = 0.5941)

r:uiJm:
w
• -7
n. ttt~ru1ti9Hl.fl~ihb'l.Hs'i5ti a : x-2y+z = o 1=1 n = (1, -2, 1)
1 GV 1 1
"' • -7 .
sb a : 2x+3y-2z = 0 1=1 n = (2, 3, -2)
2 2
I~ ·~I l-61 6
cose = ~~~~ = J6Jfj = ,ff02 = 0.59409

3~
~
tw1ru a : x-2y+z = 0 .-,w a : 2x+3y-2z = 0
1 2
tr:1QIS a : -2x+4y-2z = 0 (1) (r:1M~hsb <-2))
1 1 A
a 2 : 2x + 3 y - 2z = 0 (2)

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