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If alpha comma beta comma gamma text  are acute angles and  end text cos text end text theta equals sin space beta divided by sin space alpha comma cos space ϕ equals sin space gamma divided by sin invisible function application alpha and cos space left parenthesis theta minus ϕ right parenthesis equals sin space beta sin space gamma then the value of tan squared space alpha minus tan squared space beta minus tan squared space gamma is equal to

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    Answer:The correct answer is: 0

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