import math

print(math.pi)#원주율
print(math.e)#자연상수

print("")

print(abs(10))#절대값
print(round(1.4))#반올림
print(math.trunc(1.5))#버림

print("")

print(math.factorial(5))#팩토리얼
print(math.degrees(math.pi))#도
print(math.radians(90))#라디안

print("")

print(math.sin(math.radians(90)))
print(math.cos(math.radians(180)))
print(math.tan(math.radians(45)))
print(math.tan(math.pi/4))

print("")

print(math.acos(-1))
print(math.asin(1.0))
print(math.atan(10000))

