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An airplane flies 400 km west from city A to city B, then 200km northwest to city c and finally 100 km north to city D. How far it is from city a to d?

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2 answers
  1. D = -400 + 200[135o] + 100i = -400 - 141.4+141.4i + 100i = -541.4 + 241.4i = 593 km[24o] N. of W.

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  2. no

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