java.lang.StrictMath类的所有方法:Set 1,Set 2
java.lang.StrictMath.cos()是Java中的内置方法,用于返回给定角度的余弦值。当给定参数为NaN或无穷大时,该方法返回NaN。
用法:
public static double cos(double num)
参数:该方法接受一个双精度类型的参数num,并以弧度表示要返回余弦值的角度。
返回值:该方法返回参数的余弦值。
Examples:
Input:num = 62.0 Output:0.6735071623235862 Input:num = 64.6 Output:-0.19607204956188945
下面的程序演示了java.lang.StrictMath.cos()方法:
程序1:
// Java praogram to illustrate the
// java.lang.StrictMath.cos()
import java.lang.*;
public class Geeks {
public static void main(String[] args) {
double num1 = 0.0, num2= 1.0 , num3= 64.6;
/* Returns trigonometric cosine of specified
angle in radian*/
double cosValue = StrictMath.cos(num1);
System.out.println("The cosine of "+
num1+" = " + cosValue);
cosValue = StrictMath.cos(num2);
System.out.println("The cosine of "+
num2+" = " + cosValue);
cosValue = StrictMath.cos(num3);
System.out.println("The cosine of "+
num3+" = " + cosValue);}
}
输出:
The cosine of 0.0 = 1.0 The cosine of 1.0 = 0.5403023058681398 The cosine of 64.6 = -0.19607204956188945
程序2:
// Java praogram to illustrate the
// java.lang.StrictMath.cos()
import java.lang.*;
public class Geeks {
public static void main(String[] args) {
double num1= -62.0, num2 = 1.0;
double num3= (45*(Math.PI))/180;
/* It returns the cosine of specified
angle in radian*/
double cosValue = StrictMath.cos(num1);
System.out.println("The cosine of "+
num1+" = " + cosValue);
cosValue = StrictMath.cos(num2);
System.out.println("The cosine of "+
num2+" = " + cosValue);
cosValue = StrictMath.cos(num3);
System.out.println("The cosine of "+
num3+" = " + cosValue);}
}
输出:
The cosine of -62.0 = 0.6735071623235862 The cosine of 1.0 = 0.5403023058681398 The cosine of 0.7853981633974483 = 0.7071067811865476
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注:本文由纯净天空筛选整理自ankita_chowrasia大神的英文原创作品 StrictMath cos() Method in Java with Examples。非经特殊声明,原始代码版权归原作者所有,本译文未经允许或授权,请勿转载或复制。