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Function
TODAYO
WEEKDAY
(date
value) •
Description
Returns the current date (month, day, and year) in the serial number
format
Returns the number
for the
day
from 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
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