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Java - atan() 方法



描述

该方法返回指定双精度值的反正切值。

语法

double atan(double d)

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参数

以下是参数的详细信息:

  • d - 双精度数据类型。

返回值

  • 此方法返回指定双精度值的反正切值。

示例

public class Test { 

   public static void main(String args[]) {
      double degrees = 45.0;
      double radians = Math.toRadians(degrees);

      System.out.format("The value of pi is very very very approximately %.4f%n", Math.PI);
      System.out.format("The arctangent of %.4f is %.4f degrees %n", Math.cos(radians), 
         Math.toDegrees(Math.atan(Math.sin(radians))));
   }
}

这将产生以下结果:

输出

The value of pi is very very very approximately 3.1416
The arctangent of 0.7071 is 35.2644 degrees 
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