math.atan()方法是数学模块的库方法,用于获取反正切,它接受一个数字并返回给定数字的反正切值(以弧度为单位)。
注意: math.atan()方法接受的唯一的号码,如果我们提供任何其他除外数量,则返回错误类型错误- “类型错误:需要浮动”。
它的语法 math.atan() 方法:
math.atan(x)
Parameter(s): x –是要计算其反正切值的数字。
返回值: float-返回浮点值,该浮点值是数字x的反正切值。
示例
Input: a = 0.278 # 函数调用 print(math.atan(a)) Output: 0.27115314223853704
# python代码演示示例 # math.atan() method # 导入数学模块 import math # 数 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))
输出结果
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示例
# python代码演示示例 # math.atan() method with an exception # 导入数学模块 import math # 数 a = "2" print("atan(",a,") is = ", math.atan(a))
输出结果
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