How to add degrees, minutes and seconds - HP 15C Scientific Calculator

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On any calculator, let's convert degrees-minutes-second to degrees and then we will do the reverse.

Let's start with the number of seconds in a minute - 60, so we must take the seconds and divide by 60 to get the number of minutes. Next, add the number of minutes. The number of minutes in a degree is 60, so we take this total and divide by 60. Now we add the number of degrees to get out final answer.

Example: 35 degrees 50 minutes 32 seconds
(32/60 + 50)/60 + 35 = 35.842222 degrees

Just out of interest, let's start with 35.842222 degrees and convert it to degrees-minutes-seconds. We know it is 35 degrees, the whole number. Now we have to determine the minutes and seconds. Start by subtracting 35 to get the decimal 0.842222. Now multiply by 60 to get the number of minutes. I get 50.5332. Subtract 50 from this and multiply again by 60. I get 31.9992, which rounds to 32 seconds.

Good luck.

Paul

I don't think I have that calculator, but let's work through it with any calculator.

Let's say our heading is 45.3275 degrees. So we know it is 45 degrees, so subtract 45 from the number and multiply by 60, since there are 60 minutes in a degree. I get 19.65. So now we have 45 degrees and 19 minutes. Subtract the 19 minutes to calculate the number of seconds by multiplying the result by 60. I get 39 seconds. Overall, we have 45 degrees, 19 minutes, and 39 seconds.

Good luck.

Paul

Enter the degrees, a decimal point, then two digits for the minutes followed by two digits for the seconds (then followed by any fractional seconds). You can then convert to decimal degrees with the HMS-> function.

For example, to enter 1 degree 36 minutes 24 seconds, press 1 . 3 6 2 4 ALPHA ALPHA "H" "M" "S" right-shift "0" ENTER

Use the DMS key marked degree, apostrophe, double quotation mark.
Lets us call it [DMS]
To enter an angle in degree minutes seconds or hour, minutes, seconds, type in the number of degrees, press the [DMS] key, enter the number of seconds, press the [DMS] key, enter the number of seconds then the [DMS] key. Press = the calculator displays the value in DMS units. If you press the DMS key again the number displayed is converted to decimal degrees.
Example:enter 12 degrees, 15 minutes, and 25 seconds
12 [DMS]15[DMS]25[DMS] =
Calculator displays 12 deg 15'25"
Press the DMS key again and you see 12.2569444

Enter the degrees, press DMS, enter minutes, press DMS, enter seconds.
You must input all three items, even if they are zero.
The DMS key is marked with the degrees, minutes, and seconds symbols (circle/single-tick/double-tick), and is located two keys above the 8 key.

Yes. Pressing the DMS key (two keys above the 8 key) when a result is displayed toggles the result between decimal degrees and degrees-minutes-seconds.

For example, to convert 3.5 degrees, press 3 . 5 = and you'll see 3.5. Now press DMS and you'll see 3 degrees 30 minutes 0 seconds.

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if you mean degrees like the degree/minute/second thing: lets say you have 24.12 there is a button that has a dot, and 3 commas (it's located next to the negative button) that will convert that number to degrees. input your decimal, press the equal sign, and then press that degree button and it will convert 24.12 to degrees, minutes, and seconds. the solution is 24 degrees, 7 minutes, and 12 seconds.

Enter than angle as 32.2010 then press left-shift [->HR] to convert to decimal degrees.

The ->HR function (and the companion ->H.MS are for working in hours-minutes-seconds, but they work just as well for degrees-minutes-seconds.