1
You visited us
1
times! Enjoying our articles?
Unlock Full Access!
Byju's Answer
Standard XII
Mathematics
Family of Planes Passing through the Intersection of Two Planes
If the straig...
Question
If the straight lines
x
=
1
+
s
,
y
=
−
3
−
λ
s
,
z
=
1
+
λ
s
and
x
=
t
2
,
y
=
1
+
t
,
z
=
2
−
t
with parameters
s
and
t
, respectively, are coplanar, then
λ
equal
−
k
, where
k
=
Open in App
Solution
The given lines are
x
−
1
=
y
+
3
−
λ
=
z
−
1
λ
=
s
...(1)
and
2
x
=
y
−
1
=
z
−
2
−
1
=
t
...(2)
The lines are coplanar, if
∣
∣ ∣ ∣
∣
0
−
(
−
1
)
−
1
−
3
−
2
−
(
−
1
)
1
−
λ
λ
1
2
1
−
1
∣
∣ ∣ ∣
∣
=
0
Applying
C
2
→
C
2
+
C
3
∣
∣ ∣ ∣
∣
1
−
5
−
1
1
0
λ
1
2
0
−
1
∣
∣ ∣ ∣
∣
=
0
⇒
5
(
−
1
−
λ
2
)
⇒
λ
=
−
2
⇒
k
=
2
Suggest Corrections
0
Similar questions
Q.
If the straight lines
x
=
1
+
s
,
y
=
−
3
−
λ
s
,
z
=
1
+
λ
s
and
x
=
t
2
,
y
=
1
+
t
,
z
=
2
−
t
with parameters
s
and
t
respectively are coplanar then
λ
equals:
Q.
If the straight lines
x
=
1
+
s
,
y
=
−
3
−
λ
s
,
z
=
1
+
λ
s
and
x
=
t
2
,
y
=
1
+
t
,
z
=
2
−
t
,
with parameters '
s
' and '
t
' respectively are coplanar then
λ
equals
Q.
If the straight lines
x
=
1
+
s
,
y
=
−
3
−
λ
s
,
z
=
1
+
λ
s
and
x
=
t
2
,
y
=
1
+
t
,
z
=
2
−
t
, with parameter
s
and
t
respectively, are coplanar, then
λ
equal
Q.
If the straight lines
x
=
1
+
s
,
y
=
−
3
−
λ
s
,
z
=
1
+
λ
s
and
x
=
t
2
,
y
=
1
+
t
,
z
=
2
-
t
with parameter
s
and
t
respectively, are co-planar, then
λ
equals:
Q.
If the straight lines
x
=
1
+
s
,
y
=
−
3
−
λ
s
,
z
=
1
+
λ
s
and
x
=
t
2
,
y
=
1
+
t
,
z
=
2
−
t
, with parameters s and t respectively, are co-planar, then
λ
equals
View More
Join BYJU'S Learning Program
Grade/Exam
1st Grade
2nd Grade
3rd Grade
4th Grade
5th Grade
6th grade
7th grade
8th Grade
9th Grade
10th Grade
11th Grade
12th Grade
Submit
Related Videos
What Is an Acid and a Base?
MATHEMATICS
Watch in App
Explore more
Family of Planes Passing through the Intersection of Two Planes
Standard XII Mathematics
Join BYJU'S Learning Program
Grade/Exam
1st Grade
2nd Grade
3rd Grade
4th Grade
5th Grade
6th grade
7th grade
8th Grade
9th Grade
10th Grade
11th Grade
12th Grade
Submit
AI Tutor
Textbooks
Question Papers
Install app