Java Cos() Method



The method returns the cosine of the particular twice the value. Math. cos(double a) revisits the trigonometric cosine of a slant. If the argument is NaN or infinity, then the product is NaN. The computed result ought to be within 1 ulp of the strict result.


double cos(double d)


Here is the detail of parameters −

  • d − This method accepts a value of double data type.

Return Value

  • This method returns the cosine of the specified double value.


public class Test { 

   public static void main(String args[]) {
      double degrees = 45.0;
      double radians = Math.toRadians(degrees);

      System.out.format("The value of pi is %.4f%n", Math.PI);
      System.out.format("The cosine of %.1f degrees is %.4f%n", degrees, Math.cos(radians));

This will produce the following result:


The value of pi is 3.1416
The cosine of 45.0 degrees is 0.7071

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