Math, asked by SharmaShivam, 11 months ago

Show that $2\:tan^{-1}\left(tan\left(\pi/4\:-\:\alpha\right)tan\:\beta/2\right)\:=\:cos^{-1}\left(\dfrac{sin2\alpha+cos\beta}{1+sin2\alpha\:cos\beta\right)} {$

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Answered by wwwseenalingampalli

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