Prove that (a2-b2+c2) tan B = (a2+b2-c2) tan C = 2ab sin C .

Prove that $(a^{2} - b^{2} + c^{2}) \tan B = (a^{2} + b^{2} - c^{2}) \tan C = 2 a b \sin C$ .

Matching exercise

Match the items on the right to the items on the left.

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