# Exercise 2.14

# To find information about the inverse sine (= arc sine) function in Python,
# either go to https://docs.python.org/3/library and find it there, or use 
# ipython and give the command !pydoc math .

# Version 1
import math
x = math.asin(0.5)

# Version 2
from math import asin
x = asin(0.5)