Determine whether the two vectors are orthogonal and, if not, whether the angle between them is acute

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Determine whether the two vectors are orthogonal and, if not, whether the angle between them is acute or obtuse.

(1, 2, 1), (7,-3,-1)

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Calculus

ISBN: 9781319055844

4th Edition

Authors: Jon Rogawski, Colin Adams, Robert Franzosa

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