HARD
JEE Main
IMPORTANT
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Let the line be the projection of the line in the plane . If is the distance of the point from , then is equal to

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Important Questions on Three Dimensional Geometry
MEDIUM
JEE Main
IMPORTANT
Let be the plane passing through the point and the line of intersection of the planes . Then which of the following points does NOT lie on ?

MEDIUM
JEE Main
IMPORTANT
A hall has a square floor of dimension (see the figure) and vertical walls. If the angle between the diagonals and is then the height of the hall (in meters) is:

MEDIUM
JEE Main
IMPORTANT
Let be the foot of the perpendicular from the point on the plane containing the lines and
Then is equal to ______.

HARD
JEE Main
IMPORTANT
The distance of the point from the plane measured parallel to a line, whose direction ratios are , is

MEDIUM
JEE Main
IMPORTANT
Equation of a plane at a distance units from the origin, which contains the line of intersection of the planes and is

MEDIUM
JEE Main
IMPORTANT
The equation of the plane passing through the line of intersection of the planes and and parallel to the -axis, is

MEDIUM
JEE Main
IMPORTANT
The angle between the straight lines, whose direction cosines are given by the equations and , is:

EASY
JEE Main
IMPORTANT
Let be the mirror image of the point with respect to the plane and let be a point of this plane. Then the square of the length of the line segment is
