Now he turns west and travels for 40 minutes at 40 mph. Make sure to remember that subtracting is the same thing as adding the opposite. The problem is otherwise an application of geometry and the distance formula.
The Distance Formula squares the differences between the two x coordinates and two y coordinates then adds those squares and finally takes their square root to get the total distance along the diagonal line.
How to enter numbers. The three-dimensional distance formula is actually super simple. D x 2 - x 1 2 y 2 - y 1 2 The expression x 2 - x 1 is read as the change in x and y 2 - y 1 is the change in y. 2 9.