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In triangle ABC show that {cos^2(B)-cos^2(C)}/b+c+{ cos^2(C) - cos^2 (A)}/c+a+{cos^2(A)-cos^2(B)}/a+b=0

In triangle ABC show that {cos^2(B)-cos^2(C)}/b+c+{ cos^2(C) - cos^2 (A)}/c+a+{cos^2(A)-cos^2(B)}/a+b=0

Grade:11

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