Using a slicer value in a column calculation

[TSoren23]

Newer to Power BI, 

I am develping a report that will return distance people will need travel to a job site. I have a zipcode database that returns the Longitude and latitude for each zipcode for the workers. I have a slicer I can enter the site zipcode and will return the Longitue and Latitude for that site. The math is not the problem to calculate the didstance, I am having trouble using the returned Long and Lat of the site from the slicer to use in the calculation in the distance column for the table. Example" 

Part of the distance calc

COS(RADIANS(longitude site-longitude worker))

I get the "Long worker" value but I can not get the "Long site" value from the slicer to use in the calculated column for the results. 

[Anonymous]

@TSoren23  Have you tried using the SELECTEDVALUE function in your measure? Maybe you could store the slicer's selected value in a variable in your measure and use it.

https://learn.microsoft.com/en-us/dax/selectedvalue-function