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In a △ABC, a,b,c are the sides of the triangle opposite to the angles A,B,C respectively. If b+c=3a, then cotB2⋅cotC2 has the value equal to

Answer» In a ABC, a,b,c are the sides of the triangle opposite to the angles A,B,C respectively. If b+c=3a, then cotB2cotC2 has the value equal to


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