StrictMath cos() Method in Java with Examples
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:Â
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.Â
Examples :Â
Input: num = 62.0 Output: 0.6735071623235862 Input: num = 64.6 Output: -0.19607204956188945
Below programs illustrate the java.lang.StrictMath.cos() method:Â
Program 1:Â
java
// Java program to illustrate the// java.lang.StrictMath.cos()import java.lang.*;Â
public class Geeks {Â
public static void main(String[] args) {Â
    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);Â
    cosValue = StrictMath.cos(num2);    System.out.println("The cosine of "+                           num2+" = " + cosValue);Â
    cosValue = StrictMath.cos(num3);    System.out.println("The cosine of "+                           num3+" = " + cosValue);}} |
Output:Â
The cosine of 0.0 = 1.0 The cosine of 1.0 = 0.5403023058681398 The cosine of 64.6 = -0.19607204956188945
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Program 2:Â
java
// Java program to illustrate the// java.lang.StrictMath.cos()import java.lang.*;Â
public class Geeks {Â
public static void main(String[] args) {Â
    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:Â
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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