Development Flash ActionScript

Property      Value      Description 
E             ~2.718      Base of natural logarithm 
LN10          ~2.302      Natural logarithm of 10 
LN2           ~0.693      Natural logarithm of 2 
LOG10E        ~0.434      Base-10 logarithm of E 
LOG2E         ~1.442      Base-2 logarithm of E 
PI            ~3.142      Pi 
SQRT1_2       ~0.707      Square root of 1/2 
SQRT2         ~1.414      Square root of 2