Answers Precalculus Dot Product and Work — Unit testQuestion 23

23

QuizMultiple Choice

Dot Product and Work — Unit test

Question 23 of 25 • Precalculus

Consider vectors u = ⟨2, 1⟩ and v = ⟨4, –1⟩ with the angle between them equal to 40°. What are the scalar projections uv and vu?

Answer

A

uv = 1.33 and vu = 1.33

B

uv = 1.33 and vu = 3.16

C

uv = 1.71 and vu = 1.33

D

uv = 1.71 and vu = 3.16

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