math.atan2()方法是数学模块的库方法,用于获取“ y / x”的反正切值(即atan(y / x)),它接受两个数字并返回“ y”的反正切/ x”。
注: math.atan2()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”。
math.atan2()方法的语法:
math.atan2(y, x)
Parameter(s): y,x –是要计算其反正切值的数字(即atan(y / x))。
返回值: float-返回一个浮点值,该值是数字y / x的反正切值。
示例
Input: y = 0.2345 x = 1.234 # 函数调用 print(math.atan2(y, x)) Output: 0.18779323183177443
# python代码演示示例 # math.atan2()方法 # 导入数学模块 import math # 数字 x = -1 y = 1 print("atan2(",x,",",y,") is = ", math.atan2(x,y)) x = 0.2345 y = 1.234 print("atan2(",x,",",y,") is = ", math.atan2(x,y)) x = -5 y = 5 print("atan2(",x,",",y,") is = ", math.atan2(x,y)) x = 10 y = 20.23 print("atan2(",x,",",y,") is = ", math.atan2(x,y))
输出结果
atan2( -1 , 1 ) is = -0.7853981633974483 atan2( 0.2345 , 1.234 ) is = 0.18779323183177443 atan2( -5 , 5 ) is = -0.7853981633974483 atan2( 10 , 20.23 ) is = 0.45908957477179374
TypeError示例
# python代码演示示例 # math.atan2()方法 with an exception # 导入数学模块 import math # 数字 x = "2" y = "34" print("atan2(",x,",",y,") is = ", math.atan2(x,y))
输出结果
Traceback (most recent call last): File "/home/main.py", line 10, in <module> print("atan2(",x,",",y,") is = ", math.atan2(x,y)) TypeError: a float is required