Class 12MathematicsTHREE DIMENSIONAL GEOMETRYSystem of co-ordinates, Direction cosines and direction ratios, Projection
MediumThe direction cosines of a line segment $AB$ are $-2/\sqrt{17}, 3/\sqrt{17}, -2/\sqrt{17}$. If $AB = \sqrt{17}$ and the coordinates of $A$ are $(3, -6, 10)$,then the coordinates of $B$ are
- A$(1, -2, 4)$
- B$(2, 5, 8)$
- C$(-1, 3, -8)$
- D$(1, -3, 8)$
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Similar Questions
If the direction cosines of two lines are such that $2l + m + 2n = 0$ and $3l^2 + 5m^2 - 11n^2 = 0$,then the angle between the two lines is
$A$ line makes an angle of $45^{\circ}$ with the $x$-axis and congruent angles with the $y$ and $z$-axes. Then,the direction cosines of the line are:
The angle between the lines whose direction ratios satisfy the equations $l+m+n=0$ and $l^2=m^2+n^2$ is
DifficultAP EAMCET 2009
View SolutionIf the relation between the direction ratios of two lines in $\mathbb{R}^3$ are given by $l+m+n=0$ and $2lm+2mn-ln=0$,then the angle between the lines is ($l, m, n$ have their usual meaning).
If the direction ratios of a line are $1, -3, 2$,find the direction cosines of the line.
Easy
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