Find the distance between the points $LaTeX: \displaystyle \left( -59, \ 30\right)$ and $LaTeX: \displaystyle \left( 21, \ 48\right)$ .

The distace formula gives $LaTeX: \displaystyle d=\sqrt{ ((21)-(-59))^2 + ((48)-(30))^2 }=\sqrt{ 6400 + 324 }$ . Simplifying gives $LaTeX: \displaystyle d = 82$ .