Class 12MathematicsTHREE DIMENSIONAL GEOMETRYSystem of co-ordinates, Direction cosines and direction ratios, Projection
Easy$A$ point is in the $XZ-$ plane. What can you say about its $y-$ coordinate?
- A$0$
- B$1$
- C$2$
- DNone of these
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Similar Questions
Find the direction cosines of a line which makes equal angles with the coordinate axes.
Easy
View SolutionLet $P = (x_1, y_1, z_1)$ and $Q = (x_2, y_2, z_2)$ be two points. If the direction cosines of a line $AB$ are $l, m, n$,then the projection of the line segment $PQ$ on the line $AB$ is:
Medium
View SolutionIf the direction cosines $l, m, n$ of two lines satisfy the relations $l+m+n=0$ and $lm=0$,then the angle between those two lines is
Find the position vector of a point $A$ in space such that $\overrightarrow{OA}$ is inclined at $60^{\circ}$ to $OX$ and at $45^{\circ}$ to $OY$ and $|\overrightarrow{OA}|=10$ units.
Difficult
View SolutionLet the direction cosines of two lines satisfy the equations: $4l+m-n=0$ and $2mn+10nl+3lm=0$. Then the cosine of the acute angle between these lines is:
DifficultJEE MAIN 2026
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