3-d

Question: If $P(3,\,4,\,5),$ $Q(4,\,6,\,3),$ $R(-1,\,2,\,4),$ $S(1,\,0,\,5)$ then the projection of RS on PQ is

1) – 2/3

2) – 4/3

3) 1/2

4) 2

Solution:

Explanation: No Explanation

System of co-ordinates Direction cosines and direction ratios Projection

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