Python math.sin()方法 (Python math.sin() method)

math.sin() method is a library method of math module, it is used to get the sine of the number in radians, it accepts a number returns the cosine of the given number in radians.

math.sin()方法是数学模块的库方法，用于获取以弧度为单位的数字的正弦值，它接受一个以弧度为单位返回给定数字的余弦值的数字。

Note: math.sin() method accepts the only number, if we provide anything else except the number, it returns error TypeError - "TypeError: a float is required".

注意： math.sin()方法接受唯一的数字，如果我们提供除数字以外的其他任何内容，它将返回错误TypeError- “ TypeError：需要浮点数” 。

Syntax of math.sin() method:

math.sin()方法的语法：

    math.sin(x)

Parameter(s): x – is the number whose sine to be calculated.

参数： x –是要计算其正弦的数字。

Return value: float – it returns a float value that is the sine value of the number x radians.

返回值： float-它返回一个浮点值，该值是数字x弧度的正弦值。

Example:

例：

    Input:
a = 0.278
# function call
print(math.sin(a))
Output:
0.27443298625778634

Python代码演示math.sin()方法的示例 (Python code to demonstrate example of math.sin() method)

# python code to demonstrate example of 
# math.sin() method 
# importing math module
import math
# number
a = -1
print("sin(",a,") is = ", math.sin(a))
a = 0
print("sin(",a,") is = ", math.sin(a))
a = 0.278
print("sin(",a,") is = ", math.sin(a))
a = 1
print("sin(",a,") is = ", math.sin(a))

Output

输出量

sin( -1 ) is =  -0.8414709848078965
sin( 0 ) is =  0.0
sin( 0.278 ) is =  0.27443298625778634
sin( 1 ) is =  0.8414709848078965

TypeError example

TypeError示例

# python code to demonstrate example of 
# math.sin() method with an exception
# importing math module
import math
# number
a = "2"
print("sin(",a,") is = ", math.sin(a))

Output

输出量

Traceback (most recent call last):
File "/home/main.py", line 9, in <module>
print("sin(",a,") is = ", math.sin(a))
TypeError: a float is required

翻译自: https://www.includehelp.com/python/math-sin-method-with-example.aspx