You can use the ATAN function. Note that all trig functions in Excel work

with Radians, not Degrees. Thus, you may need to use the RADIANS functionto

convert degrees to radians or DEGREES to convert radians to degrees. E.g.,

=DEGREES(ATAN(A1))

returns the number of degrees of the angle whose tangent is in cell A1.

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Cordially,

Chip Pearson

Microsoft Most Valuable Professional

Excel Product Group

Pearson Software Consulting, LLC

www.cpearson.com
(email on web site)