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Byju's Answer
Standard XII
Mathematics
Area of Triangle with Coordinates of Vertices Given
The three pla...
Question
The three planes
4
y
+
6
z
=
5
,
2
x
+
3
y
+
5
z
=
5
,
6
x
+
5
y
+
9
z
=
10
A
meet in a point
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B
have a line in common
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C
form a triangular prism
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D
meet at infinite number of points
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Solution
The correct option is
D
have a line in common
Given three planes are
4
y
+
6
z
=
5
,
2
x
+
3
y
+
5
z
=
5
,
6
x
+
5
y
+
9
z
=
10
Determinant of coefficient of the given planes is,
=
∣
∣ ∣
∣
0
4
6
2
3
5
6
5
9
∣
∣ ∣
∣
=
−
4
(
18
−
30
)
+
6
(
10
−
18
)
=
0
Therefore, given planes have a line in common.
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Similar questions
Q.
The three planes 4y + 6z = 5, 2x + 3y + 5z = 5, 6x + 5y + 9z = 10
Q.
The three planes 4y + 6z = 5, 2x+3y+5z = 5 and 6x+5y+9z = 10
(a) meet in a point (b) have a line in common
(c) form a triangular prism (d) donot have a common point
Q.
The three planes 4y + 6z = 5; 2x + 3y + 5z = 5; 6x + 5y + 9z = 10.
Q.
The three planes 4y + 6z = 5; 2x + 3y + 5z = 5; 6x + 5y + 9z = 10
Q.
If the system of linear equations
x
−
4
y
+
7
z
=
7
g
3
y
−
5
z
=
h
−
2
x
+
5
y
−
9
z
=
k
is consistent, then :
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