1.

Find the co-ordinates of the foot of the perpendicular drawn from the origin. x + y + z = 1

Answer»


Answer :The DIRECTION cosines of the normal to the plane are `(1)/sqrt3, (1)/sqrt3, (1)/sqrt3,` and the distance of the plane from the origin `= (1)/sqrt3` (SEE example 1(B) above)
`therefore` The FOOT of the PERPENDICULAR drawn from the origin `= (1/3, 1/3, 1/3)`


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