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HP 30S Converting Angles and Times
Example 5: Convert an angle of 2.3714 degrees into DMS.
Solution:
Assuming that the current angle mode is still set to degrees, press:
2.3714—A<yy
Answer:
2º 22' 17.04'' Note that seconds are expressed in decimal format.
Example 6: Convert an angle of 0.43 radians into DMS.
Solution:
You don't have to convert 0.43 radians into decimal degrees first. Instead, use the
.43—A@@@y—A<yy
Answer:
24º 38' 13.9''
Example 7: Convert an angle of 118º 27' 59'' into decimal degrees.
Solution:
On the HP 30S there is no specific function to convert DMS into decimal degrees, because such
conversion is done automatically when processing the entry line, i.e. after pressing the y key. The º, '
and '' symbols are in the DMS menu:
118—Ay27—A@y59—A@@yy
In fact, the first two yare not necessary – selecting the desired symbol in the DMS menu suffices:
118—A27—A@59—A@@yy
The result line displays the angle in decimal degrees.
Answer:
118.4663889º'
Example 8: Add 5 hours 33 minutes to 3 hours 58 minutes.
Solution:
Remember that time measurements can be calculated using angle functions. This calculation can be done
(
º
thus:
5
33
r5—A33—A@+3—A58—A@ s—
A<yy
Answer:
9 hours and 31 minutes.
g
Note. More than one
angular unit. For example, in grad mode
degrees are parsed differently because of the DMS format.
hp calculators
+
'
º
) '
DMS:
3
58
r
or
(or both) can be included in the same calculation. Its action depends on the current
rrr
A ( +
) B
+
A (
B
)(
is the same as
- 4 -
DMS function directly:
π
/
)
3
. It does not work for º because
200
HP 30S Converting Angles and Times - Version 1.0
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