SOLUTION: Simplify sin(x+y)cos(x-y).

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Question 1007698: Simplify sin(x+y)cos(x-y).
Answer by addingup(3677) About Me  (Show Source):
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sin(x+y)cos(x-y)
= sin(x)cos(x)+sin(y)cos(y)
= 1/2(sin(2x)+sin(2y))