Java - acos() Method

Description:

The method returns the arccosine of the specified double value.

Syntax:

double acos(double d)

Parameters:

Here is the detail of parameters:

• d -- A double data types

Return Value:

• This method Returns the arccosine of the specified double value.

Example:

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 arccosine of %.4f is %.4f degrees %n",
                     Math.cos(radians),
                     Math.toDegrees(Math.acos(Math.sin(radians))));


   }
}

This produces following result:

The value of pi is 3.1416
The arccosine of 0.7071 is 45.0000 degrees