<filename>c03/p071_math1.py
import math

print(math.pi)
print(math.sin(math.pi / 2))
print(math.tan(math.pi / 4))

"""
/usr/local/bin/python3 /Users/moqi/Documents/Code/dive-into-python3-practice/c03/p071_math1.py
3.141592653589793
1.0
0.9999999999999999

Process finished with exit code 0

"""
