Question 1204c

Vectors I: Basics, Dot and Cross Products
Perpendicular Distances

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Given the points A(1,8,4){A \left( - 1, 8, - 4 \right)} and B(5,12,0),{B \left( - 5, 12, 0 \right),} what is the perpendicular distance from the point A{A} to the line OB?{OB?}

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