Apple Numbers '08 - Manual (Page 272)

272 Chapter 12 Dictionary of Functions
SINH
The SINH function calculates the hyperbolic sine of the specified number.
SINH(number)
 number: Any number.
SLN
The SLN function calculates the straight-line depreciation of an asset during a period.
SLN(cost, salvage, life)
 cost: The original cost or value of the asset.
 salvage: The salvage value of the asset.
 life: The number of periods over which the depreciation is spread.
Examples
SIN(1) returns 0.841470985, the sine of 1 radian (approximately 57.3 degrees).
SIN(RADIANS(30)) returns 0.5, the sine of 30 degrees.
SIN(PI()/2) returns 1, the sine of PI/2 radians (90 degrees).
Examples
SINH(0) returns 0.
SINH(1) returns 1.175.
SINH(5) returns 74.203.
SINH(10) returns 11013.233.
Examples
SLN(10000, 1000, 6) returns $1500, the depreciation per year, in dollars, of an asset that originally costs
$10,000 but is worth only $1,000 after 6 years.