3-d

Related Questions

• The direction cosines of the normal to the plane $3x+4y+12z=52$ will be

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• The equation of the plane through the origin containing the line $\frac{x-1}{5}=\frac{y-2}{4}=\frac{z-3}{5}$ is

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• The line $\frac{x-2}{1}=\frac{y-3}{1}=\frac{z-4}{-k}$ and $\frac{x-1}{k}=$ $\frac{y-4}{2}=\frac{z-5}{1}$ are coplanar, if

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• The direction cosines of a line equally inclined to three mutually perpendicular lines having direction cosines as ${{l}_{1}},{{m}_{1}},{{n}_{1}};{{l}_{2}},{{m}_{2}},{{n}_{2}}$ and ${{l}_{3}},{{m}_{3}},{{n}_{3}}$ are

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• If $\theta $ is the angle between the lines $AB$ and $CD$, then projection of line segment $AB$on line $CD$, is

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