Hp 48g Graphing Calculator Manual de usuario Pagina 125

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Converting Angular Units
Planar and solid angles are associated with actual units. However,
although this distinguishes them from scalars {dimensionless
numbers), the HP 48 allows you to convert between units of angle
and scalars. The conversion will interpret the scalar according to the
current angle mode setting (degrees, radians, or grads).
Unit Symbol
Definition
Value
Arcmin
Arcsec
Degree
Grad
Radian
Steradian
r" C \‘\ 1 r I
V21600 unit circle
Vi296000 unit circle
Vseo unit circle
V400 unit circle
^ /2TT unit circle
^ /4TT unit sphere
2.90888208666 x 10'^ r
4.8481368111 X 10-® r
1.74532925199 x lO'^ r
1.57079632679 x lO'^ r
1 r
1 sr
10
Calculating with Units
The HP 48 lets you execute many arithmetic operations with unit
objects, just as you would with real numbers;
Addition and subtraction (dimensionally consistent units only)
m Multiplication and division
Inversion
Raising to a power
Percentage calculations (dimensionally consistent units only)
Comparisons of values (dimensionally consistent units only)
Trigonometric operations (planar angular units only)
Several additional math operations are available, but work only on the
number part of the unit object.
1. Enter the unit objects.
2. Execute the commands.
Units are automatically converted and combined during the
calculation, though certain operations require dimensionally consistent
Unit Objects 10-7
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