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Verify each identity
sin^x+siny/sinx-siny=tan(x+y/2) (times) cot(x-y/2)
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Okay, I've been getting some of these, but I can't seem to verify this identity... any help? Here's the problem
Sin(x+y) +
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Sin(X-y)sin(x+y)=sin^2 x - sin^2 y
work on one side only...so i worked on the right =(sinx-siny)(sinx+siny) does that equal
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Sin(X-y)sin(x+y)=sin^2 x - sin^2 y
work on one side only...so i worked on the right =(sinx-siny)(sinx+siny) does that equal
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verify the identity:
sin(x+y)-sin(x-y)=2cosx siny
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