I'
'tiww &,oeL ?"*tt"5
-
0n rAp Hir.Ju Hoc clAt rics TRoNG xs0xc GIAN
t.
I
vtrr
PHLPgNG
D4ng 1r
Ccr
rniNn ruAr PHit'tc
bin
B[-1;1;3J va mat oh'Ang [P):
83. Trong kh6ng gian vsl h6 toa do Orvz , cho hal di€jm AQ;a \'vu6ng
g6c vcri m5t phang [P] D/s:
vi
- -?,,-)- -5:0.Vl6t phuong trinh mEt phing [Q) di qua hai di6m A, B
,Qt,2A-3;-11:0.
phuong trinh mit phang [P] di qua har didm '{r 2: 1: 3 ' B(1: -2:1
HT 84. Trong kh6ng gian voi h6 tga oo Oryz , vidt
HT
\
J,
t
a4
T
vi
song song voi duong
thing a
v
:
- _i _
-')r
D
z
Dls:(Pl. ii.c- j1, .'r- -9:Lr'
HT 85. Trong kh6ng gian v6i
:-)
i,,-l
-, : ,
, .r'l
t-''
:t:
HT
h0
.d''
+
D+
tQa d6 Oryz,
:! -,\ :=
'-1
693
cho
2
du&ng
thing (4) vir (d.1c6 phuong trinh:
Lip phuong trinh mit phing IPJ chria [d,)
vi
(dr)
'
D/s:{P): Y+Y-52+10=0
mat ciu tS) c6 Phuong trinh:
Orqz , cho
dd
86. Trong kh6ng gian voi hC tqa
vec rry : : , tl::
,' - !t't + z2 *2t+6y 12- 2:A Viert phrrong tr)nh m5t nhang (P) song song vor gia cua
ru6nggocvmmitphang 'r i - l, -: - II -- L vAtiepxircvdi (S
Dls:(P):2.r -y -r2z:3:l: hoac (P): 2r - l-22 -21: tl'
'
HT
g7.
Trong khong gian v6i
I :+
,,.,
-1r:J
phang
:1.j.
hO
tca de 0:;:
cho drem lvi[1;
-i;
1.,
r: -al diron3 thing ir],; ;
'=
t -t - -,
p\u:ng r-r-lir
Chfrngminh ringdidm i1. d.,.,?, cirng ndm tr0n md?m5.npn5ng. 1r;!"
d6. D/s: t: r2Y -.2 r
?
:
0
'-
lr-rit-
'
Dang 2: Phucrng trinh mit phi'ng li0n quan t6i mit chu
HT
88.
Trong khdng gian vcYi h0 toa
.:) .- !-l) - .;l - ?x - 2,' *'\z * 2 : 0.
xirc vdi mit clu [S1.
(P), :t..22- 3-2Vi:t;
Dls:
dO
Oru:
LAp phr-rong
,
cho dr-rong t'hing
__:r, "!_3
va nrat ciLi
d: t;:
T - -
trinh mat ph;ng (PJ song song v&i d vi
hodc
(P),
trLLC
[S1:
0x, dbng thcn tieP
y-22-3- 2r,5:0'
vAmitphing[P]
Trongkhdnggianvo,rh0toa dO Oru:,chomitciu[SJ: rr -!2-t2-2''-1';-]:0
mitphing [PJ vatrep x'ic
..+ j -3:0.vidtphuongtrinh mitphing [Q) dr quadidrn '1,Ii3:i: -1) vuonggocvoi
vryi mat ciu [Si.
:
D/s: (Q): 2t + 9 -2:-9 : O Hoqc (Q): l:t *7a --lz-9 0
HT89.
Cdu hoi
yri
tvqno
tLr:
(Sf , 12 = y2 + :2' -2r
-
L'J
DS:
- iz i5 : 0' 1P' : 2r - I -6'-5 :
(Q'; 2r'r29 - z-6:a
hoqc (O)
C''11(l:1;2)'
I11r-iOy..22-5:a'
Trongkh6nggianv6i hCtoa dd Orlqz,chomitcau[S]: 12 =92 -'2-2'*1'l*22
c6 bin kinh r :
irinh mit phdng toi.no, truc ox r,) cit mit c;u [S] theo m6t dudng trdn
Dl* Q):Y - 2z = 0.
HT90.
HT91.
Trongkhonggianv6ih6toa dd oiy:,cb.omitclu[S]: 12 -!'2
6>v
arrrrrrflrr
an\r
cE I.t
-3:0
3
Vi6tphugng
'
-:2 +2r-2y-22*7:0
viduongthing
.EFN
Pase 27
-;lr 'ffiTil.fr
ur
'
\
BJ s*.
-
l{*
HT113.
vA
it
r - 6: u
\1*
:t-e
Trongkh6nggianroa do O:tu::. chocacdi€:n l(ll.
/
.r *211
lP;:
0.
TRiNH DI.IONG THANG
:
thing
,.
d
.
.:',)
L,_1
j
?
_3
115. Ti'ong kh6ng gian viri h6 toa d6 Oxyz, cho dudng thing [d) c6 phlrnng lr:hl: { - - i : tr : -1 -'2t
: - l -:- t [t = ,q] vi m5t p]ring [PJ: 2.r - u -2: -:] - il Vi6t phLrong trinh tham sd cua d,;ong thing A narn trOn
,
vi
[P], cat
D/s:
vu6ng g6c v&i (dJ.
l.i
J.
:
I
j,r7
I
l::
rIT
PHLTCYNG
trinh clucrng thing bing c6ch xic tlinh vects chi phuong
,.-')
t ,,
mai phang P
114. Trong kh6ng gian vdi h€ toa dO Oxyz cho cluong thang ,l ' ; : -11.1
,i .l) : - i : t) . Vrdt phuong trinh duong thang -\ di qua -111: 1: -2 , song song voi mat phing {P; v) vudng gdc
vdr drrlng
HT
j
ai
VIET
HT
!-.
ir;.Bir:2: i) .Vi6tphuongtrinhmltpheng[P]quaA,B
ll:
cho tam gi;ic ABC c6 di6n lich bans
- )z- 3 :
Dang 1: Vi6t phuong
l":
*--!,.
).--
cit truc 0z tar M/sao
DS:
tS) &fu" ,t *taivz. w
116.
-;J
t
-
'
.
Tror-rg kh6ng gian vcri h6 toa d,6 Oxltz, cho di0m
phuirng tr)nh cfra dud'ng thlng d di qua tli6m
1"1,
cit vi
M[2; 1; 0] r,i ducrng thang
Lip
vuOng goc vai a
Ox1,2,61'r" mitphing iPl: x + 2y-Zz + I = 0 vahai diem.ii(1;7; -lJ.
(Dl
phuong
tliang
Ia hinh chidu vu6ng goc cua duong thing AB trOn [P).
trinh ducrng
8(4;2;0). LAp
. Gqi (U la mdt phdng qua A, B va vulng goc v1i (P)
= (U, Bx + 7x + i1'z - 46 = 0
HT117. Trongkh6nggianvoihEtructoadij
iD)
HT
',
= (P)
118.
Q) suy ra
phLrcrng trinh {D)
Trong kh6ng gian vdi hC toa d6 Oxyz, vidt phrrong trinh hinh chi6u vu6ng g6c cua dLrong thing
1..
n-
t\
" ..
l,'{ .'''-.
] -'i-t
t''
["
:
|t.t.:++tllt1
t.
Ef
s:1:
trdnmltphing P.r.ail
': r-5-0.
r1r,
lr:!-t,lr.
,,
l"
l. : i- tot
t
Cdu hoi tvong tLr
a) V1i
d
.r
-1_ r-1
[':
r
:
1!t
2 -- 29rrt
I
t^
I"
HT
-.)'1,r,
) - Jltt,
119. Trong kh6ng gran voi he tga dO O.x,-tz, ggi A, B, C lin }trot giao didm c0a mat phing
P : 6r -2,t= il: -6:0 r,6i 0x 01t,Oz. LApphuungtrinhdulngthangddi quatAmduongtronngoaltieptam
grAc ABC
dbng thoi vu6ng g6c vdi
mit phing (Pl.
Hoc v0 Bg - cHUyEN cAtt sE oEN sEI{
Page 31
Ir:i -:
Cl
l:t
.J : :r
D/s: d: ].,,
t') - Zt
I
L
/
-r
I
- I -
.
rlr
120. Trong kh6ng gian vdi h6 toa d6 ?xyz,
'-)
, r-l
u-l
-',_
2
2
IIT
phing
vdi dudng thing
IABCJ vir vuong g6c
' ')
L2
;
-l
2
cho
dudng thing
d.
-1
-I1
trinh dudng thing Ii6n quan il6n m6t
Dang 2: Vi6t phuong
3 didm A(L:2:-\).8(2:l:1;:C(():1:2i v)
thing khic
Clucrng
HT121. Trong kh6ng gian v6i hC toa d6 Oxyz, cho didm M[2; 1; 0J vi du]ng thing d c6 phuong trinh
1
,i , "' - : {+ : :- Vi6t phuong trinh cua duong ihing 5 di qua drdm IvI, cit va vu6ng g6c vdi duong thdng d
lr
1
vi
tirrr toa d6 drdm M' d6i xirng voi M qua d.
:t |
--'
-l
-l
'-j=
D/s:J.
'
t
Cdu hiti
tvongt?':
a) iv[i-4.-2r-1
H'l'1,22.
l/'lll,l -: -1,
;i ;j'
-;i
):11
,- ,,
)
-. -
- ')
clLl'rrng
')
thlng d l---: - !-)
i-r'ong xhong gian v6'i h6 toa cl6 Oxyz, cho dLrong
2z r 2 - 0. l-Ap phiro'ng tnnh
z-i)
.\
DS:
_1
1
- :
;t22
rhang,l song song vdi nr5t phing [P) dr qua
) v)
m5t phlng [P]:.{ + 3/ *
,[1(2; 2, 4) v;;
cIt
drrcrng tirana Ia)
I
l)-il
egiirjitu'sn.a
i; : .- . L-
')
b)d
;
.
tLt
'
-
I.)L
.1
HT
123.
:'-.17 t ): -'2 -. !, .lr' :.1.
,
r-1_
iP):2r-ry- z -r-1:0, I'I(1:2:-1). ,.Si A 2*9-5lt-2
,)
3.:
- 2 : 0,,11(3;-2:-1;.
Trong kh6ng gian voi hd toa d.6 7xyz, cho
.Br2.9.li) .Goi t.f-iAh)nhchieucr-ia,{
nin'r trong mrit'ph5ng
rT
v-i1
.
-'t
I
', ':)
:::_
-)
j'
i
(o)
dbng tho'i
I
DS:
mit phing
z*l
,'_)
.\
-6
(cr)
.:l.r -2u
- : -21) -
0
va hai dr6m ir 1: l:tj)
vi B tr6n (rr) .Tin}rd6dAidoan l:F.Timphr-rongtrinhduongthing J
cua \D vcti to r,') J vLrdng g6c vdr ,{8.
di qrra giao didm
;t
t r+
HT
124.
,Pr:.i:
Trong khOng gian vcri
-
2tt
hO
toa dd Oxyz, cno 2 m5t phing (Pl,
.:II:!
-z:0. {?, .i: -3ri-32--1:0. (dt
:+:
tal v) duong thang [d]
t,
'
IAn
luot c6 phircrng ti'inhr
tarpphLrongtrinhduongth5ng-\nimtrot.rg
[P] song song vdi m5t phing (Ql v) cit duong thang [C].
BE HOC VO
BCT
- CHUYEN CAN SE DEN BEN
Page 32
tt
-2-')
HT
I
125. Trong khOng gran
v0i
hOtoad6Oxyz,cho3di6m'-lil:2:-l)'13i'21'l;'CrU:l');v)dwongth-ng
*"t
:-:-: - ') :
LAp phuong trinh ducrng thing
2
2
-i
=,
pheng [ABC] v] r'uong g6c voi duong thang [dl
.r-2 lt-I :-.1
D /s: -t
2
t2
-11
11
A dr qua truc tam cua tam grac ABC' nam trong n'lit
rnit phing
iuong:hang I ::
HT 126. Trong khong gian vcri h6 toa dc oxyz cho dtam .ii.),: -1.1
-::
!p)..r tt .:z-it:0.Vidtphu'crngtrinhcuaduongthangd d1 quadremA namtrong(Plu;iop'diducrngthang
f
m6t g6c
Dls:
1:rir
Hoac d.
d:
, .t-:l
HT
u-2
727. Trong kh6ng gian toa db O:*yz, cho dlrons thang d: .)
\ri6r phutrng trinh dirnng thing -\
:!: *,t *;:
='2: t) Goi iv1 li giao di6rn cua d vi IPl
|
r
vudng g6c vcri d d6ng thoi khoAng c6ch tir M t6'i
l
-
a!
nanr r:()ng
mlt
Phang
(PJ,
bing jT
l'. I : -:)
:1
1
HT12B,.frongkhonggrarlv&ihetoac10o,t1,zchotnitphangirJ:,.,:
I
,
[rt]
,
t''
'
':
l1
r'i i-r) ch6o nilar-r u.ra khoing cAch gt'"ra thl"'g l'o''g
t..._.
l'-''
hodc rl ,lri:
-i
.
[::-,
trinh dtro
3rVirit
HT
129.
thing Ii6n uan
thi
kh6c
g6c chung cua hai duong thang
Trong kir6ng gian vor h0 toa dd Oxyz, vidt phuong trinh {wcrng vu6ng
Ir:3=ii
I
.\,
al6n hai ducrng
I
-1
.,:
\ ...l,
L,
1
vd J.)
- .
-l
,/
l::1-:rt
D/st
HT130.
Trongkhonggianvoi h0toa ddAxyz,vidtphuongtrinhduongthingddiquadidm 'iIi--l: -5:
[..r..,.1..=tr_n
r_!_tr_i
-..
::v) tr,t : ;
:
; r,
haidrrcrng thing: ,1, 1;'- .,;'=
["
tI i - -= 'nr,
: -5 l:I -;J-i
=
'll vicltca
:_L
=
I
D/s:
' d: 1l
)-
2t
i nffnl pflnt
Pase 33
-i,E
f
."
-
I.
't._: -i-i
-1-
,r, ];
D5
2t
l-
[.r'=3-21
b)M(3;la,
HT131.
1),Li
+:+
DS:
Trongkh6nggianv&i h6toad6 Oxyz.,cho hai dudngthing
i, _ )_,
r-r '-r
r-r*
t-t-+
112
l'-i.,-,-;-,J;. \
I-2: i
l:
f,
+,,.,#:3:=
giao didm cua
-\, vor I a I d6ng thrri cat
ti.)
D/s: r. l
I,- .LI
--,
1.
r!:]:_],,:,r'
l:=; zt
A..Arr.'im5t phingInJc6phuongtrinhli
n;:.7-,; +;-'2:tt.
Vi6'tphLrongtrinhdLrongthSngddi qtta
r'a vu6Irg gric v&i truc Oy,
rr
ii,t r:1 Trong khdng glan vor h01oE iolx-;'z cio iiu'r:ng th;ing 11, I : ,- 2/, clLrong thang t1. l) giao tuy6n.u,
l; - i-2i
hat :rat phSng [P]: 2r' ti 1 - t t'a [Q]: l: _ r.'- l: 1,- ''t Go?. li giao clidnr cita d, .rl' Vidt phrrcrng trinh
r
dLrcrng
thing d, qua diem A{2 3; 1J, dong
Lllt cin dinh
HT
thryi
r,7,
.rl, IAn lucr3 taflB va C sao c}to tam glac
D/s:ri . {r :2: lt -='.i.:::1.-'2i
L
'I'rong kirong gian vni he toa ci6 Oxyz,
133.
cit hai dr-rong thing
611o
nrat ph)ng
[): 1.: :] - i l: - ll
va hal ciucrng thing d1:
---
=
l-,ll - ----1, 1,-1 = - = a:r.Chu'ngnrinhring:l .,,'aJ:cheo.:m;ii 'r'ierphu'o'ngtr)nhdirirngth5rglnarl
:1.1.12
trin IPJ dring rhot \ c-it c:r ri: va dz.
D/s:-l. . - =
;)
--i
-l
HT 134. Trong kh6ng gian vcri hO toa d6 Oxyz, cho hai mit phing v) har dudng thing c6 phucrng trinh [P):
l--=r-t:--]
(d.) -:J-':-j=t-:
.1\-:l -.1.?. , ,t y2[Q1: .ir-J,-ttz-,:,.[dr]:
!1..i':;i1
Viet phirong trinh drrong thang [-\] song song v&i hai mat phing (Pl, ta) vi cat (drJ, [dzJ
ii - {'
l::,-1t,,-26:
D/s: [,\). -l- _:j-- _
lr :,
i+r
i
HT
135.
Trong kh6ng gian voi hO toa d6 Ox1,2, 96. mAt ohing [P]: 2:r: ' lj
:22 - 3 : 0 vi
hai dwong rhirng (d:), (d:)
VIC'Iphrrongtr)nhcluongthlng(\l
lAnlrrotcophuong1rin1','--}:
+-t
"
-:=-va+'l,l
:
:
:
3
-1
song songvoi mit pheng [PJ, cdt (ir,) vA (d") taiAvi B sao cho AB = 3.
._.)
,-1
-l
122
HT
136.
'
I
I
L
Trong kh6ng gian v61 h6 toa dd Oxyz, cho
rr-L r
,
"
g6c
.?
,,t
.
r
: J-j---'=
j "':
1
vdi a. vi cit
,C,
tai didm
,,-:
'i-1-s---':,
z
E c6
bD rrn
._)
-
mit phing [PJ: 2x -.y =;
=
1: 0 vi hai du]ng thang
" vi€itphtrongirinhdLrongthSng-\so)lgsongvoi
[P).r.'rrdng
-'llcLPrru
ho)nh d6 bdng 3.
rr^ Dry
arrrra/crr r
a
rr cE n#rr odrr
Dtoo
2A-
| .,,
Dls:A.
-
1:
T t.
-a
:6-t
r+S :,,j -6 :
Trong kh6ng gian vdi hC toa d6 1xyz, cho hai duong thing
HT 137.
,t:t
y- 2- t
.
'2
1
Vi6t phuong tr)nh duong theng (dl song song v6i truc Ox va cat (dt) tar A, Cal
[Cz)
tai
B, Tinh
, l * t/
-
t.
D/s
HT
-i;2
l''- -16
d
Y:
lJ -
138.
\.11p1
:12
Trong kh6ng gian vcli h0 toa
pl1yn.;1q
trtlh
ir
l,I
Ir
l"
l,='ii,
HT
139"l'rong
D/s A:
dlr i,-ng tirar-,g
c16
lhing: [d1l:
Oxyz, chtt har ducrng
idl s9n31:i:lrg ;ir;
r.l
- *i
-_il) - li
2.1
va
y*!
{-d2j:
)
')
1
:t
kh0ng gtan
rzcrt
h6 toa cio l')'i1'7' cho cic diem Af2'{J'ii); B[0'a'0J; cl-2'4'6;
\
tt
Viet pirrrcrng tt'rnh dtrdng thang A / /
! -l1-" ,
Iri: -',tu --- -]- -r,
j
ld) vA cat
cAc
drrong thing AB,
r'a d,-rnng
thane
ldl:
OC.
lJ, .j'; ',-('
)
Trong kh6ng gian vcri h0 truc roa 116 Lr.xl,z, cho b0'n didrn A[.1;5;61; B[0r0;1); C[0;2;0J; D[3;0;0J ChLrng minh
goc vcri nrrr p]rang O'x-v va cAt cic
cAc dLrdng th;ing AB v) CD ch6o nhaLr. Vidt phirong trinh dti'irng tllSng fci
140.
"'r-tirng
du'ong thAng AB, C).
HT
"rr/ -
r.ii il:l r.'.) ,:ii ca i';ll dti'rvrirl tlSng i.i7'r, . r-,
l:="
J.
Irr'"
l''t-:lt
HT
:
141. Trong kh6ng
gtan
vtri n0 toa d0 O,tyz, cho h:ri
tlr'rtrng thing c6 phucrng trinh:
lr
: -r - zr
,1.. ri;::
vi
]' --,-,
I
d,
cit
trungvdi gdctoad6O,
_.Xetu,t+i,tuongd6i ciadrvad:,ViStphuongtrinhduongthAngdquaivl
I:;-
dr va vu6ng g6c vdi d:.
I,.:'
I
D/s't lr: -,
l':
I
CAu
)
hdi twdng tV;
1,,
a) VOr )i;1.7.L;
,
I
1
*I
_ ZL
I
i!l.j
-i:tt
2+t
ES; ,l
:r'-1
:
31
L1-l
l
1.,:
t
I
va
[d:]:1!:l-t
Trongkhong gian voi h0 toa do Oxyz, cno 2 dLiong thing c6 phucrng rrinh:
HT 742.
(drJ
I
lz:0-2t.
L_,
-.
l,
jir:31'-i,.Goi KI)
t'-
l':
-i;11
hinh chi6u vu6ng g6c cua di6'rn
tr6n {dzJ. Tim phucrng trinh tham s6 cua du}ng
r
thiing di qua
vu6ng goc vdr (d1l
K
lx
vi cit (drl
I
11\
11
(ri
12
)
"
l
--
Lt
,],
\
-,)\J/\
.-1-t.l
11
HT
143. Trong kh6ng gian voi h0 toa d0 0;;lz chc drdm [0;1;1] va 2 ducrng thang. [dii [d;] voi; (cirl:
't - i: li -') :i ;
]i giao tuven ciia I r.et'-rl-,anr t.P., - i : rl ,.,a IQJ : :' , ,; : -- ) - li. \/i6t phLrcrng
iv1
.)
I
i
[c]rJ
trinh du'ong thing [dl qua
D/sAM: i
M vLi6ng 96c
rd-]
[d )'"a ie:
'i't-L=,=]
.):
HT
744. Trong kh6ng gian ;cvi h0 ioa ii.
.i--i
U- l
;i
|
..P-1
I
:
. ] -)
D/s --r : --'
-- -
.
'l
vLrong goc \'(ir duong
HT145.
t-
.C.:.,r
)
^+,.r^-.1,,,;.,.-rLinor\,.i^.irnn.rr,rirrhi
*rhing
r,i1 va cat JLr org.
l: : 1; \r) 2 dt|crng tirars
z, :ho :rat pirang r^ I
:ra:e :',
-
Trong khOng gian vcri h0 toa dd Oxyz, cho n-.al pha;rg rP]:
lx - -'
,..1::11
iPl, vu6ng g6c vdi drrd'ng thang [dr) vA cat dLr ]ng th;.ing i.i-'1 irr d,enr
E ': ' r:nn
,
: ir
C0 bang
12 h-r
':'Lr
'.'nr :hang [d:]:
3
fr-ll-t
I
Dlsr!:].-;
l.'-tr
t.
HT
146. Trong kir6ng gian vdi hO toa do Oxyz, clto hai didm A[0, 0;-3], B[2, 0;-1) vi mat pheng [P) co phrro'ng tr)nh:
q-' 81,, :7;. * 1:0 ViSt phuo'ngtrinh cninh tic d.rlng thing d nam trOn n-,at phang (P] r'i d vtiong goc vtri AB
tar giao drem cua drrong thing AB vo'i IP)
, -)
.:
'
HT't+7.
'I
,,
-!
---1
l
Trong khong gian vdi h€ toa d.o oxyz,cho har cluong thing"
- 1:
,12
y
- 2 :' - 1 ua mit phing [pl: r - !/ -
2:
-;] :
t) ,
dr j--L : +:::f
)
-L
;
t
dr:
vi6t phuong trinh duong thang -\ nin.r tr0n mit
phang IPJ vA cit hai duong thdng d1 , d:
,
t-'.
D/s:A:' -':I:
i
3 -i
HT 148. Trong kh6ng gian vdt h0 toa dO Oxyz, viet phLrong trinh duong
th5ng [d]
g5c r,6i
mit phing
1/
i-,,-:-
i
1
.r:::D/s
I
l-ndbngrhcyi catcahai du'ongthang ,;
)
==
":- - I: va
-I
i
-l
,VC/I irll
I
od.r... rrA piv rrrrrtrilr rhr.r ci niu pf,u
PasP 16
(Pl
.1
Lt, .I --
5
tvang tV:
Cdu h6i
a) ltni (P): -lx
- J - iz - 3 :
A,
:L:*l
trt.
P
t
-7
')
2
" 1
" ')
z*2
215
b) Vai
'l'1:2.t: t1 i: - 1 :
tl
, d,
f-t
y-l
.
3
2
i
DS,
HT
149.
, :r-2
tI'r-2
''r,i1.:,1
I
!l-2
1
Trcng kh6ng gian v&i hCAoE dcfDxt,z, cho ba mat pheng: [PJ:
z
-11
2r !; i -,:
, [QJ:
Lr
.!' q -
2.:
- l]:
lr,
.'1:*i-tlvaJu'ongthingA, i_:l:!:]::
Cqi 1,, ligiaotuye,cua(plvatQl.VietpSuong
ll:.i
r.i-rr'li lirrrrttll thin;1 [r1] viri,:tg gr-rc',,ri ilil ,;:.r ,:il ii nai iirrirttq t)ring -.:, . -i,
[R] :
D/s
HT
.r-'),:1
i
,_
d:
1
2;l
.-
r
'l
I
150. Trong khOng sian vfvi h6CIto8 d6E Ox-r'e, ciro ba drrdng thingc6 phrrcrng
''2
,l
,lt
L
,.,i...
D/s:
ti.,
__,1
' '':t
i,
2
"-- r"-'-"D -'-"''
I
lAnluottai cacdidmA,B,Csaocho,;1 R
- U('.
\
Dang 4: Vi6t phucrng
trinh duong thing lien quan d6n khoing
cdch
ir -IHT
151.
'l'rong 1
cho dLrong rSng [dJ: I
r
I
l^
-.t - .L/ r 2: * 5 :
1A
trinh
Jil
i'
.)
:',
)
l. - -r (l . Vi6t phucrng
trinh du'dng th;ng [-\J nim trong
[PJ, song song
va mir phing
i,6i [dJ vi cdch [d) m6t khoAng
.
:=i:
l
. -J
hnna
:--.
.
-1.)l
-
HT
(P)
l
'
152. Trong khong gian voi hO toa do 0x),2, cho mit ph5ng (P): : - j/ : - I 't -2 : !-] : t -, t,rn, Ilagiaodidnicr,rar?vA
[PJ.Vietphtrcrngtr)nhcuadtrongthang
1
3
-l
g6c vcri d sao cho khoang cach tir I c16n A bing 11 : 3r 2
,
-1
Cdu hdi tLrctrtg tir:
0
vi
ducrng
thing:
d:
A nam trong [P], vu6ne
a) (.P'; t- :
},
: z:
tJ
*)
.rl
_
ll
l
-,
,l
HT153. Trong kh6ng gian voi h6 toa d0 Oxyz, cho mat phing [PJ: 2x-U-2t=i):0 vi duong thing
p-1 -':-3 vietphuongtrinhduongthingAvudngg6cv&i
r-i
[FJvacitdtaimotdidmMcich[P]
' I
:
(l-
-l
m6t khoing bing
It
2.
ro
7
' - __ _
iL=-
)+
1i
11
2r)
D/s:l
' 1,,:-l=,
11
ll11
_ _.)f
It" - iI
154.
t
'-]
^
^
l-'
.) (t
-t1
-
,tf
-l
trinh dulng thing li6n quan tl6n g6c
Dang 5: Vidt phuong
HT
hoac):
Trong khdng gian voi h6 toa d6 Oxyz, cho di6m A[3; -1;
1) duong thlng A:
'
tr
-2
,. ;
..
,i
- phing
- , ui m5t
[P]: :r-lJ+z-5:0.Vi6tphucrngtrinhthams6criadwongthingddiquaA,nimtrong[P]uiihqpvtii cluirng
thing 1 mot g6c 1.-)lr
.
t.,
,)
,
D/s:.i:
l
-
i.'ltoacd:
I
l:i HT
I
155. i:'ur.;
iP):
.r
*y
ki:
jrrg
z+ 1:
h6 toa d.6 Oxyz, vidt pliLro'ng trinr dil'ong thang.\ nirn'.rcng mat
r',- l-i
.
r',1 'L.lO \,'t . .,
;'. ...:
If,C'. JI.\
. r/.
0, cdt c6c dulng thing d,
,
.11-l
: - -J
ri
:= )'2i
grarr
phang
l
I
i
f,:i+r
[r:i
D/s:d:lv: -t hoacd: ju: -t -t
[z=5+,
lr:5*!
HT 156, Trong kh6ng gian vdi he toa do Oxyz, cho h)nh cirtip A.0BC, trong dri A(1.;2; -ll, B thu6c truc 0x va cri hoinh
d6 dtrcrng, C thuoc Oy va co tung d6 drrcrng. Mat phdng [ABCJ vuong 3crc uin mat phing (OBC1, urrdit'- ].lrieit
r
pirucrng tr)nh tham sd cria duong thdng BC
HT
157. Trong kh6ng gian voi hC tqa d0
Ox1'2,
cho hai cliem
-{r'?r
-
1:I j.,910:
1: 2) v)
dr.to'ng
e:{:a-3:a::Vidtphuongtrinhducrngthang-\cli quagiacdidmcliadrtongthingdvcvi
1 -r
I
[0AB], nim trong mit phing (OABJ va hop vdi du']ng thing d m6t g6c cr sao cho .,r. o : l
rhang
rnat phing
6
D/s: J:
r-10
2
t1
-13
-5
::21 r-!oac
, - ); .r-1i)
-11
6
li
-i,l
l
:-11
-i
HT15B, Trongkhdnggianvoi h€toaddOxl,z,vi6tphucrngtrinhdr-rcrngthingldi quadidm
RF HOT l,/N RTY CHII\/FN CAN qF'r)EN IIF'N
l(i):
l: -2,,r,u6ngg6c
Peoe ?R
v6idrrongth6ng rJ
:r
:l:3:a
_:l
i
l'.
i'='
rl'E/s:-4'Jt-t-thoac
l,-
HT
159.
a:
o
Dang 5: Vi6t phucrng
I
-i
lu:)
l,-
uataovdimitphang[P): 2x r'!-z-:.5:f)
i
-)-')i
trinh dudng thnng li6n quan tl6n tam gi6c
v) phuong trinh dulng cao AH'
Trong kh6ng gian v6i h6 toa d6 Oxyz, cho l-4 BC v&i toa d6 dinh c(3; z;31
r-l
d' l:5
r-2 u-:3 :-:l
:=='::=
f .1l]C vi tinh diQn tich crla A.4BC'
=+ P) -rlr'=>"P;: 't:i y -22+1:O
phrrong tr)nh ducrng thing chrla canh BC c0a
Gqimp(P)qttaCvdvudrtgg6cvaiAH
3:tP)a'{l ),+
Goi
mp(Q
Bll;4: 3)
=phuangtrinh
=+
Lap
'
)t:tt :}-2t"2:3
'i':1.-
i{i2:2:1)=+ llt1"2'5) {Kldtrung didmcfiaCM)'
-.1
160. 'Long
phil'on1_.q
BC
---:l
Y'+ - ----
qua C, vu\ng g6c vdi 6u (Q) cdt dz va AB tai K vd M' Ta c6:
(Q) r -2u + z-2:0
HT
a:300.
'
phLrcrngtritrhduongphingiActrongBD )An lLrcvtl): rl,
.
m6tg6c
l'lnn
l:
)'.-t
-....,r,,.
i
la
tu-
I
!
i, "I
:;l i, lTii : r.,,
J-l l:i(' v0\
.l(l:
' l: l) vi
hai dwong trung tuydn thn lucrt
I
I
i/.:ir'-r'
j:=.J'i
h
rro'
I
nfirr
Peoo ?Q
co
'
vIfT pHrroNG TRiNH rvrAr cAu
HT161. Trongkh6nggianvdi h0toad6 Oxyz,chodr6m lL; -2:
)
Oy. E/s: (:r: _ i,2 -iy *212 - (: - 3 j2 : l0
HT
162.
r
ri, :
Trong kh6ng gian vdi
f,:zt
[r:
: t vA d, : :
:
[.
l.:
vu6ng g6c chung
D
/s:
(t:
Cdtt hot
2'i'
-
-
r/r.
d,
trinh mit cAu ISJ c6 duong
ch6o nhau. ViSt phuong
dr. rti.
-
-
l')2
-
:i
i'
:
2;!
n]r
l)
doan
1.
rlrarla tv:
l-
-2
.r
d.,
tt
-
1
-1
0,,1;
2
'2
-r
O
+r'
:;,-''
-
DS:
l.-+]' *[r*fJ' -f,-il'
(s)
[' :'
- lJ*l _:
l::-2
',
(dz)
2
.)
y-4
1
163. Trong kh6ng gian vryi hA tQa d6
: :
0
2
(r
,
-2):'
,'2
+i,{ - -il') -,, - ,t,'
l
, -
5
z-'2
DS: (,e) ,
HT
kf
i,
I
a)
minh
. Chr?ng
cia
(.u
.
i
t
la
r
lA
.Vi6tphuongtrinhmitclutAmlvltidpxricvdi truc
toa d6 Oxyz, cho hai dLrdng thing:
hO
:-
:3;
ax1,:r,
cho hai dwcng thang:
:l l
,1, ,
'Il
ll -- i - ,- l - --,i
Viet phutrng trinh nrat ciu co bin kinir :riro nhit tiSp xLic vcli ca hai rilrrrng trang
rr va
va
r.,.,.
= doa, vuang g6c chung cia hat dvitrct thang la clu,on,q kinh.
'.'.iat cau nhdn
Cdu hdi tvono tu:
i ,-- .i -'r*
i -),!t :t
a) ,i.-l-_,-l-_
, i., ),1 : t
[,.
[r=*
HT164,
r
,5.
1.t: : i.r:
. 2ll -
ti
.- ltj - l.r - 1,: :
I
[e=0
Trongkhdnggian r,&i
ij, i cri phuongtrinh {.2, :2i ,1/: t:z: L; (-rr; ia
graotr-rydncua2matpiring ,r :i *lt- 3: l, vi r..i;:-lr 1,1
-3:- i2: U.Chrlngt6hartlu,ongthing J,. J,
ch6o nhau vA viSt phLrong trinh rnAt clr-r nhAn doan vu6ng goc chung cria
-\. J, lAm duong kinh.
D/s: .- l,-- r,,-L,l -: lr--
HT
165.
v6i
I
toa do Oxyz,clto d..r'ong tlrang
Trong kh6ng gian v&i h6 toa d6 Oxyz, cho dr6m A1L;
:
?
hO
+
:
f
,'"n
-Z: 3J vi duong thang d co
khoing cach tt diem A ddn duong thing
d.
phLrong trinh
vidt phuong trinh mit ciu tim
A, tidp xiic
d.
D/s: (r - ir2 - ,,tj -21- i.; - 3ll :
50
i
I
i
i
HT 166,
Trong kh6ng gian vdi h6 toa dd Oxyz, cho duong
thing
- * i
at
I
i
tnan d cit
mit c)u (!J,
c6 tAm M, tai hai didm A, B sao
I>ti rrnr
rrA niy
n:rrrrrfirr
cho AR
n'i.'
:
cF
6
:
. :
vidr
,,jt
-
_:
: : v) didm .11 i: t:ri,,
trinh cia mit ciu
Duong
I
ISJ.
I
D/s:
fSJ:
-U-\2 -(z- (:i!:ts.
{.c*7)2
Trong kh6ng gian v6i hC toA d6 Oxyz, cho mAt phdng (d .2r * y - 2: - ,l : 0 vi mat c'Au
(S'),.r2 o !t) + ,2 -'2., [!i 8; .1 - L]. Xet vl tri tr-rcrng d6i cira mit chu [S) v) mat pheng
'.,.). Vi6t phuong
- - -
HT 167.
trinh mat chu [S'J ddi xung vsi m5t ciu [S) qua mAt phing i1i '
E/s: (S'l : i:r - 3.i
HT
HT
-
g)
-:- ::.1
.
:2it.
168. Trong kh6ng gian rr6i hA toa do Oxyz,)Ap phuong trinh mat chu [S] biSt ring mit
[P]: : : 2 lhn luot cit ISJ theo hai dr.rong tron cd bdn kinh blng 2 vi B.
D/* (S): it: - o1! -:y - tt,2 -,r - 1U,1 : 261) (a, b e R).
phing Oxy vi mit phang
169. Trong khdng gian vdi hO toa do Oxyz, cYLo mit phing [P]: 2.,: - rt - 2: I - U v) duong thang d:
I 'u'ri t-l.Vietphrrcrngtnnhmatcau [S) cirtAm lt].rr-r6cd, IcAch [P] m6tkhodngbing2vA [P] cit[SJ
*) - 2 1
theo nrdt dr.rong tron [CJ crj bAn kfnh bing
3.
a'
H't
170.
Tror:g khdng gian vri'i h6 toa dd Oxyz, ch) Z dieim,\i0; tl; al, Bf 2; 0; 0l
LAp pirLrgng tr)nh nrat cAir ISJ di qLra O, r\, B r.a co l
vi m;t
cich t,* tArr I lira ln;t c:u
pheng (Pi: 2x
cld-n
-
N
-- :
-'ir
:rrat pir5rrg (1)l i:alrg
'--
(l
:
.!{
H'f
171. 'frong }
,.r)rr: ,'2.11 -;'2: I-(t .Lipphuor.rgtr)nhmatcAu(Slc
i'inir
drOn tich hinir chieu cua tam giAc
D/s: i.:' : i.r - i,: -
HT
t7?.
l.r1
'-ltl - l: - ill
.'{Nt' tren mat ph.lng t,
'=
l;
-\
i-
1rh
I
lri
d:
Trong kh6ng gian voi h0 toa do Ox1,z, cho dulng thing
-31
t
t
. : +)
:;
va m5t phdng
[P):
2r-:,rr*)t.-2:0.LApphr-rongtrinhmitcAu[SJcritAn.rnarltr6nducrngthingdc6binkinhnh6nhAttielpxirc
**
J
vi
di qua didrn A[1; -1; 1J.
[PJ
D/s: (:r - 1): * (v - t;2 - :2 : 1.
vdi
'
HT173. Trongkh6lggranQx;,z,choduongthinsd:
)..."...b..
1-''-'2::v)matpheng[P]:
2t:-
11
vdi rnat pheng [P] v) di'qua clidm A[2; -1;
0J.
2:-)-'l
.Lip
1
phucrng trinh
D1s: l,{1
: i.1
mit
2':2
cAu [S] c6 tAm nAm trOn d, ti6p xirc
-',t1-'L)l - t.-
,'] 201
I
hoaclS): I.r--l
[
HT174.
13
i
1)2
.
=i'-*j'
:
1
i ..,.1;l
,l
IJ i
l2l
1rl:r
Trongkhongglan volhOtoad6O.xyz,chodidrr 1ii: !; -2) ,ducrngthingl:
2:r'-2: i/-3-:
r'imitphing
citkh6i chutheothi6tdi6n
[p]; 2r'n2r,*z:5:0.\rr6tphLrongtrinhmitciu[sJc6tamlsaochomdtphAng[Pi
l) h)nh trdn co.chu vi bdng S; , Tu do lAp phuong tr)nh mit phAng IQJ chria a vA il5p xiic r'6i [S].
Dis: lS) ;i.r'-L'r2 :iy-'2,\2 -(:--- )l -2|: Q).6,- -331-30: -10i:0.