Manual

Function
TODAYO
WEEKDAY (date
value) •
Description
Returns the current date (month, day, and year) in the serial number format
Returns the number for the dayfrom the serial number format for date va/ue. The
WEEKDAY returns a number representing the day of the week: 1 for Sunday, 2 for
Monday, etc. Date value must be a serial number. Use DATEVALUE to convert dates
entered as labels.
YEAR (date value) Returns the current year from the serial number format for the date value. Date
value must be a serial number. Use DATE'VALUE to convert dates entered as labels.
Trigonometric Functions
The arguments for trigonometric functions are either numbers or addresses of
cells that contain numbers. The results of these calculations are always
numbers.
Function Description
ACOS (value) " Returns the angle that is the arc cosine of a value from -1 to 1. Value can be a cell
or range of cells.
l ACOSH (valWe') °- . Returns the angle that-is_ehyperbolic arc cosine of a value. The inverse.
- hy_perboli--€- c0sin¢ _e-num-imr for which the hyperbolic cosine is value. Value must
i be equal to or greater than 1.
ASlN (value) --
ASINH (value)
ATAN (value)
ATANH (value)
ATAN2 (value)
Returns the angle that is the arc sine of a value. The arcsine is the angle which is the
sine of value. The angle is between lt2 and -7t2 radians. Value must be from -1 to 1.
l Returns the angle that is the hyperbolic arc sine of a value. The inverse hyperbolic
sine is the number which is the hyperbolic cosine of value.
: Returns the angle that is the arc tangent of a number. The arctangent is the angle
(in indians) for which the tangent equals value. Value is the tangent of the angle you
want.
Returns the angle that is the hyperbolic arc tangent of a value. Value must be
between (but not including) -1 and 1. The inverse hyperbolic tangent is the number
which is the hyperbolic tangent of va/ue.
Returns the arc tangent of the angle determined by the coordinates (x,y). The
arctangent is the angle formed by the x-axis and a line passing through the origin
(0,0) and the specified x,y coordinate. The coordinates x,y can be in any quadrant.
The angle is returned in radians from a2 to -7t2. A positive result indicates a
counterclockwise angle from the x-axis. You cannot use the origin for the x,y
argument. If you use 0,0 for x,y, the #VALUE# error appears in the cell.
Appendix 227