Инструкция по эксплуатации CITIZEN SR-270N
Страница 13
-E12-
Sexagesimal
↔ Decimal transformation
Sexagesimal notation is as follow
12 59 45.6 Represent 12 Degree, 59 Minutes, 45.6 Seconds
• The calculator can preform the conversion between decimal and
sexagesimal numbers by [
] and [ 2nd ] [
]. See Example
29~30.
Coordinates transformation
Rectangular Coordinates Polar Coordinates
x + y i = r (cos θ + i sin θ )
• The calculator can perform the conversion between rectangular co-
ordinates and polar coordinates by [ ALPHA ] [ Pol ( ] and [ ALPHA ]
[ Rec ( ]. Calculation results are automatically stored in memory
variables E and F. See Example 31~32.
(Note) :When using those key, make sure the calculator is set for
the angle unit you want.
Probability
• This calculator provides the following probability functions : ( See
Example 33~36.)
[ nPr ]
Calculates the number of possible permutations
of n item taken r at a time.
[ nCr ]
Calculates the number of possible combinations
of n items taken r at a time.
[ x! ]
Calculates the factorial of a specified positive
integer x , where x≦69.
[ RANDOM ] Generates a random number between 0.000 and
0.999
Other functions ( x
–1
,
,
,
, x
2
, x
3,
x
y
)
• The calculator also provides reciprocal ( [ x
–1
] ), square root ( [
]
), cubic root ( [
] ), universal root [
], square ( [ x
2
] ), cubic ( [
x
3
] ) and exponentiation ( [ x
y
] ) functions. See Example 37~40.