Update 8/31/2015-The hint now gives the solution to the math problem as well as the cache location.
The coordinates in the heading are not the location of the cache. They originally referred to an optional three stage hunt but you can now find the container by solving the following math problem.
Find the area of a circle whose radius is 1 divided by 2 times the square root of pi. (1/(2 * \/pi). The formula for the area of a circle is pi times the radius squared. This problem is most easily done by not converting pi to a decimal number. Multiply this area by 400 and add the result to the decimal parts of false waypoints N 33 46.239 W111 28.473.
The trailhead is next to the Beeline Highway at N33° 45.896' W111° 29.628' and you'll hike about 1.5 miles one way. This is one of my favorite trails. I hope you enjoy the area as much as I do.