3-d

Question: The line joining the points $(-2,\,\,1,\,-8)$ and $(a,\,b,\,c)$ is parallel to the line whose direction ratios are 6, 2, 3. The values of $a,b,c$ are

1) 4, 3, –5

2) 1, 2, –13/2

3) 10, 5, –2

4) None of these

Solution:

Explanation: No Explanation

System of co-ordinates Direction cosines and direction ratios Projection

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