Absolute Pi

Absolute Pi
Found by	Greenelephant
City	Rancho Cucamonga
State	California
Country	United States
Continent	North America
Posted on	Apr 14, 2006
Map Location	34° 8' 10" N, 117° 31' 29" W
Numbers	210, 15, 5
Type	Constant
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Todd Southworth, after bringing the first series sign to the game, now brings the first constant sign to equal pi, exactly. This sign should satisfy those that have criticized us for allowing loose approximations for pi.

Mr. Southworth takes the tangent of an angle in degrees and then the inverse tangent of the result to convert that value to radians.

${{15}\over{5}}! \times \arctan ( \tan 210^\circ ) = \pi$

This sign is eastbound CA-210 about on mile before the transition to I-15 in Rancho Cucamonga, California.