Tangents at lisp level

• Subject: Tangents at lisp level
• From: Mario Rodriguez
• Date: Mon, 13 Aug 2007 11:26:36 +0200

I get an error message when I want to compute tangents at lisp level, 
both in clisp and sbcl:

(%i1) :lisp (cos 2.0)
-0.4161468365471424
(%i1) :lisp (sin 2.0)
0.9092974268256817
(%i1) :lisp (tan 2.0)
Maxima encountered a Lisp error:

 
EVAL: undefined function TAN

Automatically continuing.
To reenable the Lisp debugger set *debugger-hook* to nil.

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