Finding a Unit Vector
Finding a unit vector in the direction of a given vector
Component Form and Magnitude of a Vector
Author: Elena Welch
The following problem is solved in this video. It is recommended that you try to solve the problem before watching the video. You can click "Reveal Answer" to reveal the answer to the problem.
Problem: Let \(P=(1,2)\) and \(Q=(5,4)\), write \(\overrightarrow{PQ}\) in component form and find the magnitude of the vector.
\(\overrightarrow{PQ} = \langle 4,2 \rangle\)
\( |\overrightarrow{PQ}| = 2 \sqrt{5}\)
\( |\overrightarrow{PQ}| = 2 \sqrt{5}\)
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