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What is the magnitude of the Cartesian vector having the x, y and z axis components to be A, B and C?

What is the magnitude of the Cartesian vector having the x, y and z axis components to be A, B and C? Correct Answer Square root of the squares each A, B and C

The magnitude of a Cartesian vector having the x, y and z axis components to be A, B and C is always the square root of the squares each A, B and C. This comes from the distance formula between two points in the Cartesian plane. That is the square root of the subtraction of the final and initial point of a line.

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