math.atan

Python math.atan()方法 (Python math.atan() method)

math.atan() method is a library method of math module, it is used to get the arc tangent, it accepts a number and returns the arc tangent value (in radians) of the given number.

math.atan()方法是數學模塊的庫方法，用于獲取反正切，它接受一個數字并返回給定數字的反正切值(以弧度為單位)。

Note: math.atan() 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.atan()方法接受唯一的數字，如果我們提供除數字以外的其他任何內容，它將返回錯誤TypeError- “ TypeError：需要浮點數” 。

Syntax of math.atan() method:

math.atan()方法的語法：

math.atan(x)

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

參數： x –是要計算其反正切值的數字。

Return value: float – it returns a float value that is the arc tangent value of the number x.

返回值： float-返回浮點值，該浮點值是數字x的反正切值。

Example:

例：

Input:a = 0.278# function callprint(math.atan(a))Output:0.27115314223853704

Python代碼演示math.atan()方法的示例 (Python code to demonstrate example of math.atan() method)

# python code to demonstrate example of # math.atan() method # importing math module import math# number a = -1 print("atan(",a,") is = ", math.atan(a))a = 0 print("atan(",a,") is = ", math.atan(a))a = 0.278 print("atan(",a,") is = ", math.atan(a))a = 1 print("atan(",a,") is = ", math.atan(a))a = 123 print("atan(",a,") is = ", math.atan(a))

Output

輸出量

atan( -1 ) is = -0.7853981633974483 atan( 0 ) is = 0.0 atan( 0.278 ) is = 0.27115314223853704 atan( 1 ) is = 0.7853981633974483 atan( 123 ) is = 1.5626664246149526

TypeError example

TypeError示例

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

Output

輸出量

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

翻譯自: https://www.includehelp.com/python/math-atan-method-with-example.aspx

math.atan

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