Erlang acos Method

Numbers in Erlang

This method returns the arccosine value of the specified value.

Syntax

acos(X)

Parameter

X-A value is specified for the inverse cosine function.

Return Value

The return value is a floating-point value representing the inverse cosine value.

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

When we run the above program, we will get the following results.

0.785407753397449

Numbers in Erlang