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 Sep 18, 2022
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The angle between the vectors u=2i-j+k and v=-i+j is:
Difficulty: Easy
A: 
$\frac{3\pi}{2}$
B: 
$\frac{2\pi}{3}$
C: 
$\frac{5\pi}{6}$
D: 
$\frac{\pi}{3}$
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NETNUST Entry TestMathematicsVectors