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StrictMath cos() Method in Java with Examples

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  • Last Updated : 13 Dec, 2021

All methods of java.lang.StrictMath class : Set 1, Set 2
The java.lang.StrictMath.cos() is an inbuilt method in Java which is used to return the cosine value of a given angle. The method returns NaN when the given argument is NaN or infinity.
Syntax: 

public static double cos(double num)

Parameters: The method accepts one parameter num of double type and refers to the angle in radian whose cosine value is to be returned.
Return Value: The method returns the cosine of the argument. 
Examples : 

Input: num = 62.0
Output: 0.6735071623235862

Input: num = 64.6
Output: -0.19607204956188945

Below programs illustrate the java.lang.StrictMath.cos() method: 
Program 1: 

java




// Java program 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);}
}

Output: 

The cosine of 0.0 = 1.0
The cosine of 1.0 = 0.5403023058681398
The cosine of 64.6 = -0.19607204956188945

 

Program 2: 

java




// Java program 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);}
}

Output: 

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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