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OpenStudy (anonymous):
9. consider the vector V=(-6,13) part1: use the dot product to find the angle (in degrees) between V=(-6,13) and the vector (1,0) part2: write V in the form (|V|cos theta|V|sin theta) express the angle theta in degrees part3; use the dot product of the vectors V=(-6,13) and W=(-42,-34) to determine if they are orthogonal
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