Hello Jess Users:

I was trying to use trignometric functions like (sin, cos, tan.
Jess gave the following error. To implement these functions, should I have
to implement in Java, or I am calling in wrong way?

Thank you
Raghavendra

Jess> (cos 0)
Jess reported an error in routine Funcall.execute while executing (cos 0).
Message: Unimplemented function cos.
Program text: ( cos 0 )  at line 1.
       at jess.Funcall.execute(Funcall.java:234)
       at jess.Jesp.parseAndExecuteFuncall(Jesp.java:1585)
       at jess.Jesp.parseSexp(Jesp.java:185)
       at jess.Jesp.parse(Compiled Code)
       at jess.Main.execute(Compiled Code)
       at jess.Main.main(Main.java:28)

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