Show that the normal to the following planes are perpendicular to each other. ` vec rdot((2 hat i- hat j+3 hat k)=5` & `vec rdot((2 hat i-2 hat j-2 hat k)=5`

Explanation

The equation of the first plane is


`{{r}} \cdot(2 \hat{\i}-\hat{\j}+3 \hat{{k}})=5`


The normal to this plane is `\vec{n}_{1}=2 \hat{i}-\hat{j}+3 \hat{k} \ldots \ldots .({i})`



The equation of the first plane is

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