I'm not sure of the terminology. I want to calculate Acos() from a formula, but it requires a number. I need to do this 40+ times so I don't want to create 40+ extra fields to store the result of the formula. I tried searching on several terms, but I'm obviously not stating it the right way. Any help on what terminology I should use to search would be appreciated.

Acos( ) requires a number. No way around that.

Can you explain more about what you are trying to do?

Is it:

Acos ( )

Acos ( )

Acos ( )

Or

Acos ( Acos ( Acos ( ) ) )