Java.lang.StrictMath.cosh() Method



The java.lang.StrictMath.cosh() method returns the hyperbolic cosine of a double value. The hyperbolic cosine of x is defined to be (ex + e-x)/2 where e is Euler's number.It include these 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.


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

public static double cosh(double x)


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

Return Value

This method returns the hyperbolic cosine of x.


  • NA


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

package com.tutorialspoint;

import java.lang.*;

public class StrictMathDemo {

   public static void main(String[] args) {
   double d1 = (60*(Math.PI))/180 , d2 = 0.0, d3 = (1.0/0.0) ;

   // returns the hyperbolic cosine of specified angle in radian
   double coshValue = StrictMath.cosh(d1); 
   System.out.println("Hyperbolic cosine of d1 = " + coshValue);
   coshValue = StrictMath.cosh(d2); 
   System.out.println("Hyperbolic cosine of d2 = " + coshValue);
   coshValue = StrictMath.cosh(d3); 
   System.out.println("Hyperbolic cosine of d3 = " + coshValue);

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

Hyperbolic cosine of d1 = 1.600286857702386
Hyperbolic cosine of d2 = 1.0
Hyperbolic cosine of d3 = Infinity