Three Dimensional Geometry — Mathematics

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Question 1
EasyJEE

The distance between the points (1,2,3) and (4,5,6) is:

A. 3√3
B. 3
C. √27
D. 9
Question 2
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The direction ratios of the line joining (1,2,3) and (4,5,6) are proportional to:

A. 3,3,3
B. 1,1,1
C. 1,2,3
D. 4,5,6
Question 3
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The direction cosines of a line equally inclined to the coordinate axes are:

A. ±1/√3,±1/√3,±1/√3±1/√3, ±1/√3, ±1/√3
B. 1,1,1
C. 1/2,1/2,1/21/2,1/2,1/2
D. 1/3,1/3,1/31/3,1/3,1/3

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