Time Calculations; Cosine, Sine, Tangent - LEXIBOOK SC460 Owner's Manual

Conversion of the latitude of Paris (48º51'44"Nord) into decimal degrees:
48 [º '''] 51 [º '''] 44 [º '''] [=]
[SHIFT] [
Conversion of 123.678 into sexagesimal degrees:
123.678 [=] [SHIFT] [

Time calculations

The sexagesimal conversion function can also be used for direct calculations
of hours / minutes/ seconds:
E.g.:
3hrs 30 mins 45sec + 6h 45mins 36sec
3 [º '''] 30 [º '''] 45 [º '''] [+] 6 [º '''] 45 [º '''] 36[º '''] [=]
thus 10hrs 16 mins 21 seconds.
3hrs 45 mins – 1,69hrs =
3 [º '''] 45 [º '''] – 1[.] 69 [=]
[SHIFT] [
thus 2hrs 03mins et 36 seconds.

Cosine, sine, tangent

[cos] cos(x)
[sin] sin(x)
[tan] tan(x)
E.g.:
[MODE] [MODE] [MODE] 1
[cos] 90 [=] ->
[tan] 60 [=] ->
Sin  30 =

[(] [sin] 30 [)][X
[MODE] [MODE] [MODE] 2
[sin] [SHIFT] [π][=]
[cos] [(][SHIFT] [π] [÷] 4 [)] [=] ->
With the sexagesimal degrees (in degree mode):
sin (62º12'24")=
[sin] 62 [º '''] 12 [º '''] 24 [º '''] [=]
60
SC460IM0237.indb 60
->
] ->
] ->
->
->
]
cos 90 | 0.
tan 60 | 1.732050808

] [=] -> (sin30)
-> sin π
cos (π÷4) |
->
48º51º44º | 48º51º44.
48º51º44º | 48.86222222
123.678 | 123º 40º40.8
3º30º45+6º45º36 | 10º16º21.
3º45º – 1.69 | 2.06
3º45º – 1.69 | 2º3º36.
| 0.25
| 0.
0.7071067812
sin 62º12º24 | 0.884635235
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20/6/07 15:28:09