Do calculation with math module

import math# from w  w w  . ja v  a  2 s.c o m
print math.cos(math.pi / 4.0)
print math.pi, math.e
print math.log(1024, 2)
print abs(-42), 2**4, pow(2, 4)
print math.sin(2 * math.pi / 180)
print math.sqrt(144), math.sqrt(2)                   # Square root
print int(2.567), round(2.567), round(2.567, 2)      # Truncate, round

x = 2.5
print math.floor(x)
print math.ceil(x)
print math.sqrt(x)
print math.frexp(x)
print math.modf(x)