📜  Java中的 StrictMath asin() 方法及示例

📅  最后修改于: 2022-05-13 01:54:53.539000             🧑  作者: Mango

Java中的 StrictMath asin() 方法及示例

Java.lang.StrictMath.asin()是 StrictMath 类的内置方法,用于返回指定值的反正弦值。返回的角度在-pi/2pi/2的范围内。该方法产生了两个特殊的结果:

  • 如果参数的绝对值大于 1 或参数本身是 NaN,则结果也是 NaN。
  • 如果传递的参数为 0,则输出也为 0,其符号与参数相同。

句法 :

public static double asin(double val)

参数:该方法接受一个double类型的参数val ,指的是要返回其反正弦的值。

返回值:该方法返回参数的反正弦值。
例子 :

Input: val = 0.72
Output: 0.80380231893303

Input: val = 7.0
Output: NAN

Input: val = 0.0
Output: 0.0

下面的程序说明了Java.lang.StrictMath.asin() 方法:
方案一:

// Java program to illustrate the
// java.lang.StrictMath.asin()
import java.lang.*;
  
public class Geeks {
  
    public static void main(String[] args)
    {
  
        double val1 = 0.65, val2 = 3.00, val3 = 0;
  
        double asinvalue = StrictMath.asin(val1);
        System.out.println(" The arc sine value is = "+
                                            asinvalue);
  
        asinvalue = StrictMath.asin(val2);
        System.out.println("The arc sine value is = "+
                                            asinvalue);
                            
        asinvalue = StrictMath.asin(val3);
        System.out.println("The arc sine value is = "+
                                           asinvalue);
    }
}
输出:
The arc sine value is = 0.7075844367253556
The arc sine value is = NaN
The arc sine value is = 0.0

方案二:

// Java program to illustrate the
// java.lang.StrictMath.asin()
import java.lang.*;
  
public class Geeks {
  
    public static void main(String[] args)
    {
  
        double val1 = -0.85, val2 = -2.00, val3 = 0;
  
        double asinvalue = StrictMath.asin(val1);
        System.out.println(" The arc sine value is = "+
                                            asinvalue);
  
        asinvalue = StrictMath.asin(val2);
        System.out.println("The arc sine value is = "+
                                            asinvalue);
  
        asinvalue = StrictMath.asin(val3);
        System.out.println("The arc sine value is= "+
                                            asinvalue);
    }
}
输出:
The arc sine value is = -1.015985293814825
The arc sine value is = NaN
The arc sine value is= 0.0