COSH function
COSH returns the hyperbolic cosine of a value. It takes arguments in radians where,
radians = (angle * 2 * 3.1416 / 360)Using the COSH function to find the hyperbolic cosine of 30 degrees:
SQL>
SQL> SELECT COSH(30*2*3.1416/360) FROM dual;
COSH(30*2*3.1416/360)
---------------------
1.14023899
SQL>
SQL>
SQL>
SQL> select COSH(3.1415926) from dual;
COSH(3.1415926)
---------------
11.5919527
SQL>