Question 990101
Hi dear,
The lenght of AB is given by
{{{AB=sqrt((x[2]^2-x[1]^2)+(y[2]^2-y[1]^2))}}}
From your question,
x2=7
x1=3
y2=9
y1=1
put the above in the formula,and get the lenght of
AB as 8.9
Hope this helps?
GOOD LUCK!