Vector a Has a Magnitude of 3

question 10

Multiple Choice

Vector A has a magnitude of 3.0 units and makes an angle of −90.0º with the positive x-axis. Vector B has a magnitude of 4.0 units and makes an angle of −120º with the positive x-axis. What is the direction of the vector sum A + B relative to the positive x-axis?

• A) −107º
• B) 55º
• C) −55º
• D) −145º

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Definitions:

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