Java 数学 sin()方法示例
原文:https://www . geesforgeks . org/Java-math-sin-method-examples/
java.lang.Math.sin() 返回 0.0 到π之间的三角正弦值。如果参数是 NaN 或无穷大,那么结果就是 NaN。如果该参数为零,则结果是一个零,其符号与该参数相同。返回值将介于-1 和 1 之间。
语法:
public static double sin(double a) ;
参数:要返回正弦值的值。
返回类型:此方法返回参数的正弦值。
实施:
在这里,我们将提出两个例子,其中一个简单地展示第一个例子的 Math.sin() 方法Java . lang 包 方法和次要 be edge case 的工作。
例 1
Java 语言(一种计算机语言,尤用于创建网站)
// 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));
}
}
Output:
0.49999999999999994
0.7071067811865475
0.8660254037844386
1.0
例 2
Java 语言(一种计算机语言,尤用于创建网站)
// 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);
}
}
Output:
NaN
NaN
NaN
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