3-d

Question: If O is the origin and A is the point (a, b, c) then the equation of the plane through A and at right angles to OA is

1) $a(x-a)-b(y-b)-c(z-c)=0$

2) $a(x+a)+b(y+b)+c(z+c)=0$

3) $a(x-a)+b(y-b)+c(z-c)=0$

4) None of these

Solution:

Explanation: No Explanation

Plane

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