Finding the missing side of a right triangle is a pretty simple matter if two sides are known. One of the more famous mathematical formulas is \(a^2+b^2=c^2\), which is known as the Pythagorean Theorem. The theorem states that the hypotenuse of a right triangle can be easily calculated from the lengths of the sides. The hypotenuse is the longest side of a right triangle. If you're given the lengths of the two sides it is easy to find the hypotenuse. Just square the sides, add them, and then take the square root.
Re: Difference between NOdup and NoDupkey..?? NODUP will delete duplicated observations (records that are identical to each other) while NODUPKEY will delete those observations that have duplicate BY values (the sort BY variables that you name in PROC SORT). From @Cynthia_sas: Here are just a few of the papers and Tech Support notes on the subject:
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