Mark against the correct answer in each of the following:

The direction cosines of the perpendicular from the origin to the plane are


Given: Equation of plane is


Formula Used: Equation of a plane is where is the unit vector normal to the plane, represents a point on the plane and is the distance of the plane from the origin.


Explanation:


The equation of the given plane is … (1)


Now,


= 7


is a unit vector.


(1) can be rewritten as




which is of the form


Perpendicular vector from the origin to the plane is



So, direction cosines of the vector perpendicular from the origin to the plane is

1