# Degrees, Minutes, Seconds form (DMS)

• December 9th 2009, 05:35 PM
makinsushi
Degrees, Minutes, Seconds form (DMS)
I'm learning about degrees and radians and this came up in my homework.

Convert:

Example: 54(degrees)45(minutes)

to decimal degree form.

I know (after using the DMS function on my calculator) that the answer is 54.75

How do I do this without my calculator?

How do I convert DMS back and forth?
• December 9th 2009, 05:42 PM
bigwave
Quote:

Originally Posted by makinsushi
I'm learning about degrees and radians and this came up in my homework.

Convert:

Example: 54(degrees)45(minutes)

to decimal degree form.

I know (after using the DMS function on my calculator) that the answer is 54.75

How do I do this without my calculator?

How do I convert DMS back and forth?

use the DD conversion (to get the decimal degrees)
be sure that mode set to approximate
with TI-89 anyway
• December 10th 2009, 01:53 AM
jgv115
The OP said to do it without a calculator.

We have 54 and 45 minutes.

We have to convert into decimal.

How many minutes in a degree? 60.

So $\frac {45}{60}$

$= 3/4$

$= 0.75$

So that's how you get 54.75