Answers NC-Math 4 CR Vector Addition and SubtractionQuestion 9

9

QuizMultiple Choice

Vector Addition and Subtraction

Question 9 • NC-Math 4 CR

Let a = ⟨5, –9⟩ and b = ⟨–3, 1⟩, and c = b – a. What is the magnitude and direction angle of c?

Answer

A

|c| = 12.8; θ = 128.7°

B

|c| = 18.0; θ = 128.7°

C

|c| = 12.8; θ = 308.7°

D

|c| = 18.0; θ = 308.7°

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