Java.lang.Math.cosh() Method

Description

The java.lang.Math.cosh(double a) returns the hyperbolic cosine of a double value. Special cases:

• If the argument is NaN, then the result is NaN.

• If the argument is infinite, then the result is positive infinity.

• If the argument is zero, then the result is 1.0.

The computed result must be within 2.5 ulps of the exact result.

Declaration

Following is the declaration for java.lang.Math.cosh() method

public static double cosh(double x)

Parameters

• x -- The number whose hyperbolic cosine is to be returned.

Return Value

This method returns the hyperbolic cosine of x.

Exception

• NA

Example

The following example shows the usage of lang.Math.cosh() method.

package com.tutorialspoint;

import java.lang.*;

public class MathDemo {

   public static void main(String[] args) {

      // get two double numbers
      double x = 45.0;
      double y = 180.0;

      // convert them to radians
      x = Math.toRadians(x);
      y = Math.toRadians(y);

      // print their hyperbolic cosine
      System.out.println("Math.cosh(" + x + ")=" + Math.cosh(x));
      System.out.println("Math.cosh(" + y + ")=" + Math.cosh(y));


   }
}

Let us compile and run the above program, this will produce the following result:

Math.cosh(0.7853981633974483)=1.3246090892520057
Math.cosh(3.141592653589793)=11.591953275521519