Write the length (magnitude) of a vector whose projections on the… - Vidyadip

Question

Write the length (magnitude) of a vector whose projections on the coordinate axes are 12, 3 and 4 units.

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Answer

Given: Projections on the coordinate axes are 12, 3, 4 units. Therefore,
Length of vector $=\sqrt{12^2+3^2+4^2}$
$=\sqrt{169}$
$=13$

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