Re: [Maxima-discuss] how to get sec, csc, cot instead of reciprocals of cos, sin, tan

[Raymond T. <toy...@gm...>]

>>>>> "Henry" == Henry Baker <hb...@pi...> writes:

    Henry> Re: non-normalized: For example, if you have a 2x2 orthogonal
    Henry> matrix -- e.g., matrix([cos(t),sin(t)][-sin(t),cos(t)]) --
    Henry> then matrix([c,s],[-s,c]) will do most of what you want even
    Henry> if c^2+s^2 isn't equal to 1.

    Henry> Any attempt to keep c,s normalized will blow up the symbolic
    Henry> calculation for not much benefit.

Ah, I see.  Yes this makes sense, and I agree with you.