1:20 Review of basic trigonometry on angle in standard position
5:47 Vector in component form
8:14 Vectors are defined by magnitude and direction
13:07 Given magnitude and direction, write a vector in component form
20:40 Defining vector i and vector j
22:22 Writing a unit vector in the direction of a given vector
26:26 Defining a scalar multiple
30:03 Parallel vectors are scalar multiples
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