The locus represented by xy + yz = 0 is ...

The locus represented by xy + yz = 0 is .........

A pair of perpendicular lines

A pair of parallel lines

A pair of parallel planes

A pair of perpendicular planes

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KUMAR PRAKASHAN-THREE DIMENSIONAL GEOMETRY-SOLUTION OF NCERT EXAMPLAR PROBLEMS (Short Answer Type Question)

If the directions cosines of a line are k, k and k then ..........
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The distance of the plane barr.(2/7i+3/7j-6/7k)=1 from the origin is …...
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The sine of the angle between the straight line (x-2)/(3)=(y-3)/(4)=(z...
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The reflection of the point (alpha,beta,gamma) in the xy - plane is .....
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The area of the quadrilateral ABCD, where A(0, 4, 1), B(2, 3, -1), C(4...
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The locus represented by xy + yz = 0 is .........
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The plane 2x – 3y + 6z - 11 = 0 makes an angle sin^(-1)alpha with X- a...
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A plane passes through the points (2, 0, 0) (0,3,0) and (0, 0, 4). The...
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The direction cosines of the vector 2bari + 2barj - bark are ............
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The cartesian equation of a line is (x-5)/(3)=(y+4)/(7)=(z-6)/(2).Writ...
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The vector equation of the line through the points (3, 4, -7) and (1, ...
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The cartesian equation of the plane barr.(bari+barj-bark)=2 is...........
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The unit vector normal to the plane x + 2y + 3z - 6 = 0 is (1)/(sqrt(1...
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The intercepts made by the plane 2x - 3y + 5z + 4 = 0 on the co-ordina...
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The angle between the line vecr=(5hati-hatj-4hatk)+lambda(2hati-hatj+h...
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The angle between the planes barr.(2bari-3barj+bark)=1 and barr.(i-j)=...
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The line barr = 2bari - 3barj - bark + lambda (bari - barj + 2bark) li...
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The cartesian equation of a line is (x-5)/(3)=(y+4)/(7)=(z-6)/(2).Writ...
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The equation of a line, which is parallel to 2bari + barj + 3bark and ...
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If the foot of perpendicular drawn from the origin to a plane is (5, -...
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