atan()

描述 (Description)

该方法返回指定double值的反正切值。

语法 (Syntax)

double atan(double d)

参数 (Parameters)

这是参数的细节 -

• d - 双数据类型。

回报价值

• 此方法返回指定double值的反正切值。

例子 (Example)

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 (Output)

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