Compute each of the following: (a) The angle between the vectors v = <2, 1, −4> and w = <1, 4, 2>. (b)  The projection of the vector v onto w, where v and w are the vectors from part (a). (c)  The volume of the parallelepiped formed by the vectors v and w from part (a) and the vector u = <1, 1, 1>.

Algebra and Trigonometry (MindTap Course List)
4th Edition
ISBN:9781305071742
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter9: Vectors In Two And Three Dimensions
Section9.CR: Chapter Review
Problem 3CC
Question

Compute each of the following:
(a) The angle between the vectors v = <2, 1, −4> and w = <1, 4, 2>.

(b)  The projection of the vector v onto w, where v and w are
the vectors from part (a).

(c)  The volume of the parallelepiped formed by the vectors v and
w from part (a) and the vector u = <1, 1, 1>.

(d) The cross product a × b, where a and b are in the plane
2x − 7y + 3z = 4, |a| = 2, |b| = 5, and the angle between a and b is 30
degrees. Note: there are two possible correct answers here, I will accept
either one.

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