SINH (Number) SINH (Number) Number Number Number The input number. Returns Number Number The hyperbolic sine. Details Returns the hyperbolic sine of a number. The hyperbolic sine is defined as ( EXP (Number) - EXP ( - Number)) / 2( EXP (Number) - EXP ( - Number)) / 2. The inverse of this function is ASINH. Example 2.868 * SINH (0.0342 * 1.03) 2,868 * SINH (0,0342 * 1,03) Returns roughly 0.1010.