Java asin()方法

Java Math.asin()方法返回指定double值的反正弦值。

語法

double asin(double d)

參數

• d - double數據類型。

返回值

• 此方法返回指定double值的反正弦值。

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 %.4f%n", Math.PI);
      System.out.format("The arcsine of %.4f is %.4f degrees %n", Math.sin(radians),
         Math.toDegrees(Math.asin(Math.sin(radians))));
   }
}

執行上面示例代碼，得到以下結果：

The value of pi is 3.1416
The arcsine of 0.7071 is 45.0000 degrees