Trigonometric Identities Sum & Product

So is there a way to do the second equation with symbolic operator?
Shawn

So is there a way to do the second equation with symbolic operator?
Shawn
So is there a way to do the second equation with symbolic operator?
Yes, but I guess you won't like it.
It would force Mathcad to make an expression more complicated, as Valery had pointed out in his way, and thats not what Mathcad is made for. OK, there are times when I doubt my last statement 
Here we go - its made in MC15 but give the same result in Prime, too (except keyword hiding and showing and equal sign, of course),

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