#!/usr/bin/python3
#The cos() method returns the cosine of x radians
#cos(x)
import math

a = 899
b = math.cos(a)
print(b)

print ("cos(3) : ", math.cos(3))
print ("cos(-3) : ", math.cos(-3))
print ("cos(0) : ", math.cos(0))
print ("cos(math.pi) : ", math.cos(math.pi))
print ("cos(2*math.pi) : ", math.cos(2*math.pi))
