Respuesta :

altavistard
Don't you mean pi or [tex] \pi [/tex]?  Pie is (usually) edible; pi is not.

If you meant

sin 3[tex] \pi [/tex]
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         2

That would be 0/2 = 0.

If you meant    sin [3[tex] \pi [/tex]/2]

that would be -1.