How do you convert #-145.8^circ# to #D^circM'S''# form?
Strip off the numbers to the right of the decimal and convert those to minutes.
Strip off the numbers to the right of the decimal of the converted minutes and convert those to seconds.
Strip off the number(s) to the right of the decimal and perform dimensional conversion on it.
We start the dimensional conversion by writing the value over 1:
Multiply by the factor for converting from degrees to minutes:
Please observe that the units of degrees cancel:
If there were numbers to the right of the decimal, we would strip those off and convert them to seconds, using the factor
You need to know the conversion: