cosh
From cppreference.com
                    
                                        
                    
                    
                                                            
                    |   Defined in header <math.h>
   | 
||
|   float       coshf( float arg );  | 
(since C99) | |
|   double      cosh( double arg );  | 
||
|   long double coshl( long double arg );  | 
(since C99) | |
Computes hyperbolic cosine of arg
[edit] Parameters
| arg | - | floating point value | 
[edit] Return value
Hyperbolic cosine of arg
[edit] See also
|    computes hyperbolic sine (sh(x))  (function)  | |
|   hyperbolic tangent   (function)  | |
|    (C99)  | 
   hyperbolic arc cosine   (function)  | 
|   C++ documentation for cosh 
 | |