Part A

A disoriented physics professor drives $3\mathrm{.}33km$ north, then $4\mathrm{.}82km$ west, and then $1\mathrm{.}54km$ south.

Find the magnitude of the resultant displacement of this professor.

Express your answer in kilometers.

$|vec(r)|=$

$km$

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Part B

Find the direction of the resultant displacement of this professor.

Express your answer in degrees.

$=$

$$ west of north

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