Hyperbolic / Inverse Hyperbolic Functions; Rectangular / Polar Coordinates; Permutations, Combinations - Citizen SR-260 Instruction Manual

1
–1
cos (
2
–1
tan 1 = ? grad

Hyperbolic / Inverse hyperbolic functions

cosh1.5+sinh1.5 =
–1
sinh 7 =
tanh 1 =

Rectangular / Polar coordinates

Rectangular Coordinates
Y
y
0 x
(Note) : When using those key, make sure the calculator is set for the
angular unit you want.
Converting from Rectangular to Polar
If a = 5 and b = 6
, what are r and ?
Converting from Polar to Rectangular
If r = 25 and
, what are a and b?

Permutations, Combinations

n !
nPr =
(n – r) !
How many
permutations of 4
items can you select
out of a set of
numbers of 7 items?
) = ? rad 2 [
[ 2ndF ] [ cos
1 [ 2ndF ] [ tan
1.5 [ HYP ] [ cos ] [ + ]
1.5 [ HYP ] [ sin ] [ = ]
7 [ HYP ] [ 2ndF ] [ sin
1 [ HYP ] [ tan ]
• P( x, y )
X
a + b i= r (cos
5 [ a ] 6 [ b ]
[ 2ndF ] [ R
[ b ]
= 56° 25 [ a ] 56 [ b ]
[ 2ndF ] [ P
[ b ]
nCr =
7 [ 2ndF ] [ nPr ] 4 [ = ]
] [ 2ndF ] [ 1/X ]
– 1
]
–1
]
Polar Coordinates
Y
+ i sin
P]
R]
n !
r ! (n – r) !
E-12
RAD
GRAD
DEG
–1 DEG
]
DEG
• P( r,
r
0
)
DEG
DEG
DEG
DEG
DEG
0.79
50.00
4.48
2.64
0.76
)
X
7.81
50.19
13.98
20.73
840.00