3-d

Question: If O is the origin and $OP=3$with direction ratios $-1,\,2,-2$, then co-ordinates of P are

1) (1, 2, 2)

2) $(-1,\,2,\,-2)$

3) (–3, 6, –9)

4) $(-1/3\,,\,2/3,\,-2/3)$

Solution:

Explanation: No Explanation

System of co-ordinates Direction cosines and direction ratios Projection

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