Reduce the equation ` vec rdot(3 hat i-4 hat j+12 hat k)=5` to normal form and hence find the length of perpendicular from the origin to the plane.

Explanation

Here, given pane is

`rˉ.(3i-4j​+12k)=5.....(1) `


or `r.n=5`

where `n=3i-4j​+12k`

So,

`∣n∣=sqrt(3^2+4^2+(12)^2)
​=13`

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