Distance Formula

  1. \rhd Distance Fomula (9:38)
    Find the distance between (3,-4) and (6,0) using the distance formula by deriving it from the Pythagorean Theorem.Then Sal uses the formula he derived to compute the distance between (-6,-4) and (1,7).  In this example he uses an on-screen TI graphing calculator.
  2. \star Use the Pythagorean Theorem (distance formula) to find the distance between two points in the plane.
  3. \rhd Really nice application!  Thiago (Brazillian soccer player) asks: How long does a keeper have to react to a penalty kick? (12:04)