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Adding Vectors: Problem 2

  1. Jun 17, 2017 #1
    1. The problem statement, all variables and given/known data
    Hi, can you guys please see if my solution is correct. Any feedback would be awesome.

    Using components determine the sum of a + b if a = 3 m [N 30° W] and b = 2 m [N 10° E].

    2. Relevant equations
    N/A

    3. The attempt at a solution
    Capture.PNG
     
  2. jcsd
  3. Jun 17, 2017 #2

    Doc Al

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    Looks good!
     
  4. Jun 17, 2017 #3

    berkeman

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    I agree that it looks good, but I got a slightly different answer than you for the magnitude (not the 3.00 that you got). Try again, and be consistent with the number of significant figures you carry along. I like to do it with the same numbers carried along in my calculator for the full calculation, instead of writing them down and then using the rounded-off numbers that I've written down for the next part of the calculation... :smile:
     
  5. Jun 17, 2017 #4

    Doc Al

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    Rounded to 2 sig figs, I get the answer posted by aatari. :wink:
     
  6. Jun 17, 2017 #5

    berkeman

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    True, and I guess in fairness the problem statement only had 1 significant figure for the magnitudes in the problem statement (at least if the OP copied the problem exactly)... :smile:
     
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