Oracle COSH Function: A Simple Guide

The COSH function in Oracle SQL is a mathematical function that returns the hyperbolic cosine of a given number.

This is a technical function used in engineering, physics, and complex mathematics, rather than in typical business reporting.

What is the COSH Function in Oracle?

The COSH (Hyperbolic Cosine) function takes a single number as input and returns its hyperbolic cosine. Unlike the regular COS function, COSH is not periodic (it doesn't repeat in a wave).

• Input: A number.
• Output: The hyperbolic cosine of that number.

COSH Function Syntax

The syntax for COSH is very simple:

COSH(n)

Let's break that down:

• n: The number for which you want to find the hyperbolic cosine.

Oracle COSH Function Examples

Here are two practical examples of how to use COSH.

Example 1: Finding the Hyperbolic Cosine of 0 with COSH

This example finds the hyperbolic cosine of 0, which is a standard mathematical identity. The result is always 1.

Query:

SELECT 
  COSH(0) AS "Cosh_of_0"
FROM DUAL;

Result:

 Cosh_of_0
-----------
          1

Example 2: Using COSH Finding the Hyperbolic Cosine of 1

This example calculates the hyperbolic cosine of the number 1.

Query:

SELECT 
  COSH(1) AS "Cosh_of_1"
FROM DUAL;

Result:

 Cosh_of_1
-----------
 1.54308063