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
