10
QuizMultiple Choice
Dot Product and Work
Question 10 • Precalculus
Given u = ⟨1, 3⟩, v = ⟨2, 1⟩, and cos(ϴ) = , where ϴ is the angle between the vectors, what is the scalar projection uv and the dot product u · v?
Answer
A
uv = 1.41 and u · v = 4.47B
uv = 2.24 and u · v = 5.00C
uv = 2.24 and u · v = 7.07D
uv = 7.07 and u · v = 15.81