# Cos; Cosh - HP 48gII Advanced User's Reference Manual

Graphing calculator.

where
x
in
1
n
,
x
is the mean of the data in column n
n
2
1
the number of data points.
...µ
Access:
Input/Output:
COL , COV, PREDX, PREDY, XCOL, YCOL

## COS

Type:
Analytic Function
Description: Cosine Analytic Function: Returns the cosine of the argument.
For real arguments, the current angle mode determines the number ' s interpretation as an angle,
unless the angular units are specified.
For complex arguments, cos(x + iy) = cosx coshy – i sinx sinhy.
If the argument for COS is a unit object, then the specified angular unit overrides the angle
mode to determine the result. Integration and differentiation, on the other hand, always observe
the angle mode. Therefore, to correctly integrate or differentiate expressions containing COS
with a unit object, the angle mode must be set to Radians (since this is a "neutral" mode).
T
Access:
Flags:
Numerical Results (–3), Angle Mode (–17, –18)
Input/Output:
ACOS, SIN, TAN

### COSH

Type:
Analytic Function
Description: Hyperbolic Cosine Analytic Function: Returns the hyperbolic cosine of the argument.
For complex arguments, cosh(x + iy) = coshx cosy + i sinhx siny.
...Ñ
Access:
Flags:
Numerical Results (–3)
Input/Output:
ACOSH, SINH, TANH
3-36 Full Command and Function Reference
n
x
i
=
1
---------------------------------------------------------------------------------- -
n
x
in
i
=
1
is the ith coordinate value in column n
CORR
Level 1/Argument 1
Level 1/Argument 1
z
'symb'
x_unit
angular
HYPERBOLIC COSH
HYPERBOLIC COSH
Level 1/Argument 1
z
'symb'
x
x
x
n
n
in
in
1
2
1
2
n
2
2
x
x
x
n
n
in
1
2
1
2
i
=
1
,
is the ith coordinate value in the column
x
1
in
2
,
x
is the mean of the data in column n
n
1
2
(Ñ is the right-shift of the 8key).
( ´is the left-shift of the Pkey).
, and n is
2
Level 1/Item 1
x
correlation
Level 1/Item 1
cos z
'COS(symb)'
cos (x_unit
)
angular
Level 1/Item 1
cosh z
'COSH(symb)'

49g+