Trigonometry
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Is the given equation an identity?
sin7x+sin6xsin7x−sin6x=tan(13x2)tan(x2)\frac{\sin7x+\sin6x}{\sin7x-\sin6x}=\frac{\tan\left(\frac{13x}{2}\right)}{\tan\left(\frac{x}{2}\right)}sin7x−sin6xsin7x+sin6x=tan(2x)tan(213x)
Yes
No