On Sat, 22 Aug 2009 10:55:01 -0700, Philosophaie
wrote:

I am trying to use the Acos function in my code:

y = Application.WorksheetFunction.Acos(x)

but it keeps giving me an error:

"Unable to get the Acos property of the WorksheetFunction class."

What is your value for "x"?

If it is not in the range of possibility (i.e. -1 to 1) you will see that error
message.
--ron