Given the vectors v and u, answer a. through d. below. v = 9i – 5k u = i+j+k a. Find the dot product of v and u. u•v = Find the length of v. |v| (Type an exact answer, using radicals as needed.) Find the length of u. |u| ||(Type an exact answer, using radicals as needed.) %3D b. Find the cosine of the angle between v and u. cos 0 = (Type an exact answer, using radicals as needed.) c. Find the scalar component of u in the direction of v. (Type an exact answer, using radicals as needed.) d. Find the vector projection of u onto v. proj,u = |(Type your answer in terms of i, j, and k.)

Trigonometry (MindTap Course List)
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Author:Charles P. McKeague, Mark D. Turner
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Chapter7: Triangles
Section7.1: The Law Of Sines
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Given the vectors v and u, answer a. through d. below.
v = 9i – 5k u = i+j+k
a. Find the dot product of v and u.
u•v =
Find the length of v.
|v =
(Type an exact answer, using radicals as needed.)
Find the length of u.
u| = (Type an exact answer, using radicals as needed.)
b. Find the cosine of the angle between v and u.
cos 0
(Type an exact answer, using radicals as needed.)
c. Find the scalar component of u in the direction of v.
(Type an exact answer, using radicals as needed.)
d. Find the vector projection of u onto v.
proj,u =
(Type your answer in terms of i, j, and k.)
Transcribed Image Text:Given the vectors v and u, answer a. through d. below. v = 9i – 5k u = i+j+k a. Find the dot product of v and u. u•v = Find the length of v. |v = (Type an exact answer, using radicals as needed.) Find the length of u. u| = (Type an exact answer, using radicals as needed.) b. Find the cosine of the angle between v and u. cos 0 (Type an exact answer, using radicals as needed.) c. Find the scalar component of u in the direction of v. (Type an exact answer, using radicals as needed.) d. Find the vector projection of u onto v. proj,u = (Type your answer in terms of i, j, and k.)
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