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Question Number 86168 by jagoll last updated on 27/Mar/20

$$\mathrm{given}$$$$\sin \mathrm{x}+\sin \mathrm{y}=2\sin (\mathrm{x}+\mathrm{y})$$$$\mathrm{x}+\mathrm{y}\ne 0$$$$\mathrm{find}\mathrm{the}\mathrm{value}\mathrm{of}$$$$\tan \frac{\mathrm{x}}{2}\tan \frac{\mathrm{y}}{2}=$$

Answered by john santu last updated on 27/Mar/20

Commented by jagoll last updated on 27/Mar/20

$$\mathrm{waw}...\mathrm{great}\mathrm{sir}$$

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