SOLUTION: Mae drives 20km to the south and then 40 km to the east. What is the magnitude and direction of his displacement from the origin?

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Question 1186532: Mae drives 20km to the south and then 40 km to the east. What is the magnitude and direction of his displacement from the origin?
Answer by Alan3354(69443) About Me  (Show Source):
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Mae drives 20km to the south and then 40 km to the east. What is the magnitude and direction of his displacement from the origin?
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Distance is the hypotenuse of the right triangle.
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The acute angle with the x-axis is the arc tangent of (20/40) --> a bearing of ~116.6 degrees.