Trigonometric Calculations; Value Π; Angle Units; Choosing The Angle Unit And Conversions - LEXIBOOK SC460 Owner's Manual

Value π
[SHIFT] [π]
Note : in order to be more precise in its calculations, the calculator uses a
value π having 12 significant numbers, thus 3,14159265359.
E.g.:
Perimeter and maximum surface area of a Formula 1 wheel, the maximum
diameter being 660mm.
We calculate the radius (diameter divided by 2) expressed in meters, then
we apply the formulas 2πr et πr
660 [÷] 2 [÷] 1000 [=]
[SHIFT][STO] [Y]
The value of the radius is saved in memory.
2 [SHIFT] [π] [ALPHA] [Y] [=]
[SHIFT] [π] [ALPHA] [Y] [X
The perimeter is thus 2,1 m and the surface area 0,34 m
Comment: the multiplication is implicit, it was thus not necessary to press
the [x] key.

Angle Units

Angle units and conversions
[MODE] [MODE] [MODE] 1
[MODE] [MODE] [MODE] 2
[MODE] [MODE] [MODE] 3
[SHIFT] [DRG ] 1
(or 2 or 3)
Note : the setting remains set if the calculator is turned off and on again. Be
sure to check the angle unit activated before carrying out your calculation!
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4. TRIGONOMETRIC FUNCTIONS
Displays the approximate value of the constant π, with
ten significant numbers, thus 3,141592654

:
-> 660÷2÷1000
-> 660÷2÷1000->Y
->

] [=] ->
Degrees is activated as the angle unit.
The symbol
Radians is activated as the angle unit.
The symbol
Grads is activated as the angle unit. The
symbol
Conversion of the angle unit input in
degrees (or radians or grads) into the
activated angle unit.
| 0.33
| 0.33
2πY | 2.073451151

| 0.34211944
πY

.
D is displayed.
R is displayed
G is displayed.
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20/6/07 15:28:08