M - acos returns NaN

[vehau1]

I have a problem, I use acos (Number.Acos([Column1])) in creation of a custom column in Power Query. However, the function only seem to return a number value when the input is between 0 and 1. Otherwise it returns NaN. How can i circumvent this?

[v-shex-msft · Accepted solution]

HI @vehau1 ,

As the document said, it will return the decimal value. I'd like to suggest you change column type to decimal to display detail values.

DAX Function ACOS  

In addition, please double-check the inputted parameter to confirm they are valid for this function.

Regards,

Xiaoxin Sheng