CITIZEN SR-281N - Manual (Page 17)

File name : CBM_SR-281N_IB_English_black_v09330.doc
Date: 2009/3/30 Trimmed Size : 140 x 75 mm SCALE 1 : 1
-E16-
¾ 3 sin –1 0.5 = 90 deg
DEG
3 ¼ s i n –1 0 . 5 =
3 [ 2nd ] [ sin –1 ] 0.5 [=]
9 0 .
Hyperbolic / Inverse-Hyp. functions
SR-281N uses [ 2nd ] [ HYP ] to calculate the hyperbolic functions and
inverse-hyperbolic functions - sinh, cosh, tanh, sinh
–1 , cosh –1 and
tanh –1 .
(Note) : When using those keys, make sure the calculator is set for the
angle unit you want.
¾ cosh 1.5 + 2 = 4.35240961524
DEG
c o s h 1 . 5 + 2 =
[ 2nd ] [ HYP ] [ cos ] 1.5 [ + ] 2 [=]
4 . 3 5 2 4 0 9 6 1 5 2 4
¾ sinh –1 7 = 2.64412076106
DEG
s i n h 1 –1 7 =
[ 2nd ] [ HYP ] [ 2nd ] [ sin –1 ] 7 [=]
2 . 6 4 4 1 2 0 7 6 1 0 6
Coordinates transformation
Rectangular Coordinates Polar Coordinates
x + y i = r (cos θ + i sin θ )
(Note) : When using those key, make sure the calculator is set for the
angle unit you want.
The calculator can perform the conversion between rectangular
coordinates and polar coordinates by [ 2nd ] [ P R ] and [ 2nd ]
[ R P ].
¾ If x = 5, y = 30, what are r, θ ? Ans : r = 30.4138126515,
θ = 80.537677792 o
DEG ( )
R P ( 5 ,
[ 2nd ] [ R P ] 5 [ 2 nd ] [ ] 30
3 0