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Class XII Maths 3D Geometry 6: Important Questions
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Question 1
The shortest distance between the lines = = and == is-
Question 2
The points A(5, –1, 1); B(7, –4, 7); C(1, –6, 10) and D(–1, –3, 4) are vertices of a -
Question 3
Points (1, 2, 3); (3, 5, 7) and (–1, –1, –1) are-
Question 4
A tetrahedron has vertices at O (0, 0, 0), A (1, 2, 1), B (2, 1, 3) and C (− 1, 1, 2). Then the angle between the faces OAB and ABC will be
Question 5
If line = (–2–) + λ(2++2) is parallel to the plane . (3–2–m) = 14, then the value of m is
Question 6
The angle of intersection of the normals at the point of the curves x2 – y2 = 8 and 9x2 + 25y2 = 225 is
Question 7
If the lines and are at right angles, then the value of k will be –
Question 8
A plane meets the co-ordinate axes in A, B, C such that the centroid of the triangle is the point (1, r, r2), the equation of the plane is -
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