If `O` is the origin, `O P=3` with direction ratios `-1,2,a n d-2,` then find the coordinates of `Pdot`

Explanation

Let the coordinates of point P be` ({x}_{1}, {y}_{1}, {z}_{1})`


We have,

`{OP}=3`

`


sqrt{({x}_{1}-0)^{2}+({y}_{1}-0)^{2}+({z}_{1}-0)^{2}}=9 `

`
{x}_{1}^{2}+{y}_{1}^{2}+{z}_{1}^{2}=9 ldots text { (1) }`


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