Java Math sin() 方法和示例

Java.lang.Math.sin()返回介于 0.0 和 pi 之间的角度的三角正弦值。如果参数为 NaN 或无穷大，则结果为 NaN。如果参数为零，则结果为零，其符号与参数相同。返回的值将介于 -1 和 1 之间。

句法 ：

public static double sin(double a) ;

参数：要返回其正弦值的值。

返回类型：此方法返回参数的正弦值。

执行：

在这里，我们将提出 2 个示例，其中我们将简单地展示Java.lang 包的Math.sin()方法的工作原理 方法和次要是第一个特定示例的边缘情况，其中参数是 NaN 或无穷大。

示例 1

Java

// Java program to demonstrate working
// of java.lang.Math.sin() method
import java.lang.Math;
 
class Gfg {
 
    // driver code
    public static void main(String args[])
    {
        double a = 30;
         
        // converting values to radians
        double b = Math.toRadians(a);
 
        System.out.println(Math.sin(b));
 
        a = 45;
         
        // converting values to radians
        b = Math.toRadians(a);
 
        System.out.println(Math.sin(b));
 
        a = 60;
         
        // converting values to radians
        b = Math.toRadians(a);
 
        System.out.println(Math.sin(b));
 
        a = 90;
         
        // converting values to radians
        b = Math.toRadians(a);
 
        System.out.println(Math.sin(b));
    }
}

输出：

0.49999999999999994
0.7071067811865475
0.8660254037844386
1.0

示例 2

Java

// Java program to demonstrate working of Math.cos() method
// of java.lang package considering infinity case
 
// Importing classes from java.lang package
import java.lang.Math;
 
public class GFG {
 
    // Main driver method
    public static void main(String[] args)
    {
 
        double positiveInfinity = Double.POSITIVE_INFINITY;
        double negativeInfinity = Double.NEGATIVE_INFINITY;
        double nan = Double.NaN;
        double result;
 
        // Here argument is negative infinity,
        // output will be NaN
        result = Math.sin(negativeInfinity);
        System.out.println(result);
 
        // Here argument is positive infinity,
        // output will also be NaN
        result = Math.sin(positiveInfinity);
        System.out.println(result);
 
        // Here argument is NaN, output will be NaN
        result = Math.sin(nan);
        System.out.println(result);
    }
}

输出：

NaN
NaN
NaN