np.radians

Python math.radians()方法 (Python math.radians() method)

math.radians() method is a library method of math module, it is used to convert angle value from degree to radians, it accepts a number and returns the angle value in radians.

math.radians()方法是数学模块的库方法，用于将角度值从度转换为弧度，它接受一个数字并以弧度返回角度值。

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

注意： math.radians()方法仅接受数字，如果我们提供除数字以外的任何其他内容，它将返回错误TypeError – “ TypeError：需要浮点数” 。

Syntax of math.radians() method:

math.radians()方法的语法：

    math.radians(x)

Parameter(s): x – is the number in degree to be converted into radians.

参数： x –是要转换为弧度的度数。

Return value: float – it returns a float value that is the angle value in radians.

返回值： float-它返回一个浮点值，即以弧度为单位的角度值。

Example:

例：

    Input:
x = 10.25
# function call
print(math.radians(x))
Output:
0.17889624832941878

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

# Python code to demonstrate example of
# math.radians() method
# importing math module
import math
# number in radians
x = 0
print("math.radians(",x,"): ", math.radians(x))
x = 0.25
print("math.radians(",x,"): ", math.radians(x))
x = 10.25
print("math.radians(",x,"): ", math.radians(x))
x = -0.25
print("math.radians(",x,"): ", math.radians(x))

Output

输出量

math.radians( 0 ):  0.0
math.radians( 0.25 ):  0.004363323129985824
math.radians( 10.25 ):  0.17889624832941878
math.radians( -0.25 ):  -0.004363323129985824

TypeError example

TypeError示例

# Python code to demonstrate example of
# math.radians() method with exception
# importing math module
import math
# number in radians
x = "10"
print("math.radians(",x,"): ", math.radians(x))

Output

输出量

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

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

np.radians