Question: Symbolic Computations

I am having trouble trying to perform some of the computations listed in the Maple Advanced Engineering Mathematics E-book.  I directly copy and paste the text into my worksheet but Maple does not compute the answer as shown in the e-book.  It simply rewrites what I copied in a different format.  For example I'll write:

simplify(CrossProduct('A' , 'E') ) ;

Instead of computing the answer it just rewrites my input in a differnent way like this:

=CrossProduct((cos(p)-psin(p),-2sin(p)-pcos(p))

It never shows the result of the cross product.  The vectors I am trying to calculate the cross product have 3 components and I only show the first component for each vector above for clarity.  I am new to Maple and don't know what I am doing wrong.  Thanks for your help.