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28-05-2019
Mathematics

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sin(x−y)/sinxsiny= coty - cotx

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28-05-2019

[tex]x = 0 \\ \\ \sin^{2}(y) \sin( \frac{x - y}{ \sin(x)} ) - \sin(x) \cos(y)\cos(x)\sin(y)= 0[/tex]

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