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DrunkenOldFool
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- Feb 6, 2012
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If $\sin x +\cos y=a$ and $\cos x+\sin y =b $, then what is $\tan\dfrac{x-y}{2}$ in terms of $a$ and $b$?
Hello DrunkenOldFool! We have the following equationsIf $\sin x +\cos y=a$ and $\cos x+\sin y =b $, then what is $\tan\dfrac{x-y}{2}$ in terms of $a$ and $b$?