trigreduce(factor(cos(la)*cos(u)*sin(v)*R - sin(la)*cos(u)*cos(v)*R));
On Wed, Apr 25, 2012 at 00:09, kun <kun3721 at yahoo.com.cn> wrote:
> Hello everyone,
>
> I entered the following line into Maxima:
> trigreduce(cos(la)*cos(u)*sin(v)*R - sin(la)*cos(u)*cos(v)*R);
>
> I expect:
> sin(v-la)*cos(u)*R
>
> but Maxima returned:
> sin(v + u - la) R sin(v - u - la) R
> ----------------- + -----------------
> 2 2
>
> how can I get my wanted result?
>
> Regards,
>
> Kun
>
>
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