[Maxima] about trigreduce

kun kun3721 at yahoo.com.cn
Tue Apr 24 23:09:43 CDT 2012

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:

but Maxima returned:
 sin(v + u - la) R   sin(v - u - la) R
  ----------------- + -----------------
             2                   2

how can I get my wanted result?


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