math.tan()方法是数学模块的库方法,用于获取弧度数的正切值,它接受一个数字,以弧度为单位返回给定数的正切值。
注意: math.tan()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.tan() 方法:
math.tan(x)
Parameter(s): x –是要计算其切线的数字。
返回值: float-返回一个浮点值,该值是数字x弧度的正切值。
示例
Input: a = 0.278 # 函数调用 print(math.tan(a)) Output: 0.2853901924877167
# python代码演示示例 # math.tan() method # 导入数学模块 import math # 数 a = -1 print("tan(",a,") is = ", math.tan(a)) a = 0 print("tan(",a,") is = ", math.tan(a)) a = 0.278 print("tan(",a,") is = ", math.tan(a)) a = 1 print("tan(",a,") is = ", math.tan(a))
输出结果
tan( -1 ) is = -1.5574077246549023 tan( 0 ) is = 0.0 tan( 0.278 ) is = 0.2853901924877167 tan( 1 ) is = 1.5574077246549023
TypeError示例
# python代码演示示例 # math.tan() method with an exception # 导入数学模块 import math # 数 a = "2" print("tan(",a,") is = ", math.tan(a))
输出结果
Traceback (most recent call last): File "/home/main.py", line 9, in <module> print("tan(",a,") is = ", math.tan(a)) TypeError: a float is required