-module(helloworld).
-import(math,[acos/1]).
-export([start/0]).
start() ->
Acos = acos(0.7071),
io:fwrite("~p~n",[Acos]).
-module(helloworld).
-import(math,[acos/1]).
-export([start/0]).
start() ->
Acos = acos(0.7071),
io:fwrite("~p~n",[Acos]).