Orchid XP v8 <voi### [at] devnull> wrote:
> Well, the sine and cosine functions can't be computed by a finite number 
> of additions, subtractions, multiplications, divisions and exponents. 

  They can if you allow the parameters to be complex numbers (which is why
trigonometric functions are included in the set of elementary functions).

-- 
                                                          - Warp

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