What is Math.cosh() in Java?

Java has a built-in Math class, defined in the java.lang package, which contains important functions to perform basic mathematical operations. The class has the cosh() method, which is used to compute a specified angle’s hyperbolic cosine.

Syntax

public static double cosh(double angle);

Parameter

The function takes in one single parameter, which is described below.

  • angle represents the double value corresponding to the angle in radians for which we have to find the hyperbolic cosine.

Return value

The function returns the double value corresponding to the hyperbolic cosine of the angle.

  • If the value of angle is NaNnot a number then the return value is NaN.

  • If the value of angle is positive/negative infinity, then the return value is positive infinity.

Code

To convert an angle measured in degrees to an equivalent angle measured in radians, we use can use the built-in Math.toRadians(double angle_in_degrees) method.

import java.lang.Math;
class HelloWorld {
    public static void main( String args[] ) {
        double param = Math.toRadians(30);
        double result = Math.cosh(param);
        System.out.println("cosh(" + param + ") = " + result);
        
        param = Math.toRadians(45);
        result = Math.cosh(param);
        System.out.println("cosh(" + param + ") = " + result);
        param = Math.toRadians(60);
        result = Math.cosh(param);
        System.out.println("cosh(" + param + ") = " + result);
        param = Math.toRadians(90);
        result = Math.cosh(param);
        System.out.println("cosh(" + param + ") = " + result);
        result = Math.cosh(Double.POSITIVE_INFINITY);
        System.out.println("cosh(∞) = " + result);
        result = Math.cosh(Double.NEGATIVE_INFINITY);
        System.out.println("cosh(-∞) = " + result);
        result = Math.cosh(Double.NaN);
        System.out.println("cosh(NaN) = " + result);
    }
}

Free Resources

License: Creative Commons-Attribution-ShareAlike 4.0 (CC-BY-SA 4.0)