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Fill in the blanks in the length of the ...

Fill in the blanks in the length of the projection of the line segment joining (1,3,-1) and (3,2,4)on z-axis is ______.
`[1,3,4,5]`

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USHA PUBLICATION-VECTORS THREE DIMENSIONAL GEOMETRY -EXERCISE
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  10. Show that the ax+by+d =0 is perpendicular to xy-plane.

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  12. Write the equation of the plane passing through (3,-6,-9) and parallel...

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  13. Write the equation of the plane passes through y-axis and z-axis.

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  14. What is the distance of the point (1,1,1)from the plane y=x?

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  15. Find the direction cosines of the line segment joining (3,6,1) and (4,...

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  16. What is the number of line which are equally inclined to the axes?

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