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Vector addition; spherical coordinates

  1. Jan 27, 2012 #1
    Should be quite easy, really, given that it's just adding things together, hey ho.

    a position vector of point (1), identified by sherical coordinates, is 5m away from point (2).
    I have a unit vector R1,2 identified by spherical coordinates [Aex - Bey +Cez], giving the direction to point 2.
    How do I find the position vector of point 2

    Do I just add 5.0m to each element? Of course not, but how do I do it, please?
  2. jcsd
  3. Jan 27, 2012 #2


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    Science Advisor

    No, multiply your unit vector by 5 and add that.
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