import math

# 求阶乘
print(math.factorial(6))
# 向下取整
print(math.floor(12.98))
# 向上取整
print(math.ceil(15.0001))
# 幂运算
print(math.pow(2, 10))
print(math.sin(math.pi / 6))
print(math.cos(math.pi / 3))
print(math.tan(math.pi / 2))
