In reality it’s easy but i’m just brain dead cause i just woke up

The value of cos 30° is the same as which of the following?

Which best describes a central bank's primary goals? limiting inflation and reducing unemployment reducing unemployment and maintaining cash flow controlling stagflation and reducing unemployment managing credit and ensuring the money supply's liquidity

The volume of a box varies directly with its length if a box in the group has a length of 30inches and k=24 what is its volume