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!

Distance formula

  1. Sep 6, 2004 #1
    Yah, easy I know, but I got a little confused. Okay, here's the problem:
    Find the distance between the points to the nearest tenth. J(2,-1) K(2,5) Here's what I did. d=√(2-2)^2+(5-(-1)^2 (the ^2 means squared) √(2-2)^2=0 so I'm left with √(5-(-1)^2= √(6)^2= √36=6 Ok, so how did I do? I wasn't sure if what I did was right, I think so, but I just needed to make sure. Thanks.
  2. jcsd
  3. Sep 6, 2004 #2


    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    Your solution is correct.
  4. Sep 6, 2004 #3


    User Avatar
    Science Advisor

    In fact, in that case, since the x coordinates of (2,-1) and (2,5) are the same so the distance is just the distance between -1 and 5 on a number line: 5-(-1)= 6.
  5. Sep 6, 2004 #4
    Oh, yah I never thought about that. Heh, that would have saved some time, I'll remember that! Thanks to both of you.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook