acos function

Philosophaie

Active Member
Joined
Mar 5, 2010
Messages
254
I am having trouble with my acos function:

d=Application.WorksheetFunction.acos(c)

where c is in radians and there is no error in it.

The error statement says:

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

I know there are other ways of getting the Acos function to work in VBA so could someone show me the way?
 

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MickG

MrExcel MVP
Joined
Jan 9, 2008
Messages
14,841
Hi, This is one way:-
Code:
Dim oDeg, orad
oDeg = 30
orad = oDeg * Application.Pi / 180
MsgBox Cos(orad) 'cos of 30 dgrees= 0.866025404
MsgBox Application.Acos(0.866025404) * (180 / Application.Pi()) '= 30 Degrees
Regards Mck
 

Oaktree

MrExcel MVP
Joined
Jun 20, 2002
Messages
8,053
Office Version
  1. 365
Is the value of c between -1 and 1? If not, your ACOS function will return an error and you'll get the message you're seeing...
 
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