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In △ABC with usual notations, acosA+bcosB+ccosCa+b+c=12, then the value of sinA+sinB+sinCsinAsinBsinC is |
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Answer» In △ABC with usual notations, acosA+bcosB+ccosCa+b+c=12, then the value of sinA+sinB+sinCsinAsinBsinC is |
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