1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Need help finding magnitude of A - B + C given 3 vectors!

  1. Sep 22, 2015 #1
    You are given three vectors.
    A = 46.0 at θ1 = 56.6° above the +x axis
    B = 25.0 at θ2 = 34.4° above the −x axis
    C = 32.0 along the −y axis.

    Determine A - B + C (magnitude and angle from the positive x axis).
    Determine the angle relative to the positive x-axis, positive above and negative below

    I have attempted the solution many times and ended up with 44.6 and -9.96 deg. but it is incorrect
    Screen Shot 2015-09-22 at 10.41.39 PM.png

    Any help would be appreciated!

  2. jcsd
  3. Sep 22, 2015 #2
    Looks like you've made a simple sign error. You have the correct sign for the vector B's components, but then you added the values for the resultant's x component rather than subtracting.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted

Similar Discussions: Need help finding magnitude of A - B + C given 3 vectors!
  1. Need Help With C++ (Replies: 1)