Python | sympy.cos()方法
简单来说，cos()方法是余弦函数。利用 simpy 模块中的cos(x)方法，可以计算出 x 的余弦值。
Syntax : sympy.cos(x)
Return : Returns the cosine of x
代码#1: 下面是用 cos()方法求余弦函数的例子。
# importing sympy library
from sympy import *
# calling cos() method on expression
geek1 = cos(-1)
geek2 = cos(pi / 3)
print(geek1)
print(geek2)
输出:
cos(1)
1/2
代码#2:
# importing sympy library
from sympy import *
# calling cos() method on expression
geek = cos(2 + 5j)
print(geek)
输出:
-30.8822353189167 - 67.4727884405875*I
