Sexagesimal ↔ Decimal Transformation; Trigonometric / Inverse-Tri. Functions - Citizen SR-281 User Manual

90 [ 2nd ] [ DRG
[ 2nd ] [ DRG
Sexagesimal ↔ Decimal transformation
The calculator enables you to convert the sexagesimal figure (degree,
minute and second) to decimal notation by pressing [
convert the decimal notation to the sexagesimal notation by [ 2nd ]
[ ].
Sexagesimal figure value display is as follow :
125 45 30
(Note) : The total digits of D, M and S and separator marks must be
within 12 digits, or the sexagesimal couldn't be shown
completely.
12.755 = 12 45
12.755 [ 2nd ] [
l
2 45 10.5
2 [ ] 45 [

Trigonometric / Inverse-Tri. functions

SR-281 / SR-282 provides standard trigonometric functions and
inverse trigonometric functions - sin, cos, tan, sin
(Note) : When using those keys, make sure the calculator is set for the
angle unit you want.
sin 30 deg.= 0.5
[ sin ] 30 [
]
]
Represent 125 degrees (D),
55
45 minutes(M), 30.55 seconds(S)
l l l
18
]
l l
= 2.75291666667
] 10.5 [
]
O
9 0
1 . 5 7 0 7 9 6 3 2 6 7 9
1 . 5 7 0 7 9 6 3 2 6 7
]
2 . 7 5 2 9 1 6 6 6 6 6 7
s i n 3 0 =
-E15-
RAD
=
GRAD
1 0 0 .
DEG
l
1 2 4 5 1 8
DEG
–1 –1
, cos and tan
DEG
0 . 5
] or
l l
–1
.