Find Magnitude of vector (-4,2) write answer in simplified radical form

TOPKAT asked Feb 14, 2023

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TOPKAT asked Feb 14, 2023

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13 votes

To find the magnitude of a vector, there is a simple formula:

$\begin{gathered} |v|=\sqrt[]{x^2+y^2} \\ |v|=\sqrt[]{(-4)^2+(2)^2} \\ |v|=\sqrt[]{16+4}=\sqrt[]{20}=2\sqrt[]{5} \\ \end{gathered}$

MrWolf answered Feb 18, 2023

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