ACOS Function does not exist


I have created a Smartsheet to collect operations data and I'm now trying to add a formula in there to automatically return a result using a formula.

In other words, cell B1 and C1 get filled out through a form, and when that happens I want D1 to show a result using a formula which includes ACOS (Arccosine) and SQRT (Square Root) functions. However, these functions do not seem to work in Smartsheet.

Is there a solution to my problem I do not see?

Thank you!



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