SOLUTION: If sin(x+y)-sin(x-y) = 2f(x)sin y, then f(x)=?

SOLUTION: If sin(x+y)-sin(x-y) = 2f(x)sin y, then f(x)=?

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Question 859783: If sin(x+y)-sin(x-y) = 2f(x)sin y, then f(x)=?
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!

So,

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