Why bother converting to radians and back again?
=13+15/60+12+55/60 gives the same as your =DEGREES(RADIANS(13 +
15/60)+RADIANS(12 + 55/60))

Otherwise if you have 13:15 in one cell and 12:55 in another, just add them
and format the result as [h]:mm to get 26:10 or as [h]"°"mm"'" to get
26°10'
--
David Biddulph

"JLatham" wrote in message
...
I don't generally work with angles, so what I offer is probably rough and
could use improvement - someone else may come along and give you a better
way.

One other has asked this question in the past, and an answer was provided
he
http://answers.yahoo.com/question/in...8100033AAzgam1

I came up with this for your example
=DEGREES(RADIANS(13 + 15/60)+RADIANS(12 + 55/60))
that will return 26.16667

Hope this gets you headed in the direction you want to go.

"Elton Law" wrote:

Hi,
Is Excel capable to perfrom degree calculation please?

13°15' + 12°55' = 26°10'

Thanks