Published by:
CGP EDU Academic Team
Published on: August 14, 2026
Let P 1 =x + y + z + 1 = 0, P 2 =x - y + 2z + 1 = 0 and P 3 = 3x + y + 4z + 7 = 0 be three planes. The distance of the line of intersectionof planes P 1 = 0 and P 2 = 0 from the plane P 3 = 0 is
A
units
B
units
C
units
D
units
Text Solution
Verified by ExpertsThe correct answer is:
C
units
A vector parallel to the line of intersection is
for a point on the line of intersection
Put z = 0
So, equation line to the intersection is
line of intersection is parallel to the plane P 3 = 0
So, Stance = 
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