1.

If A, B, C are angles of an acute angle triangle. Then minimum value of ∣∣∣∣∣(tan B+tan C)2tan2Atan2Atan2B(tan C+tan A)2tan2Btan2Ctan2C(tan A+tan B)2∣∣∣∣∣ is

Answer» If A, B, C are angles of an acute angle triangle. Then minimum value of


(tan B+tan C)2tan2Atan2Atan2B(tan C+tan A)2tan2Btan2Ctan2C(tan A+tan B)2

is


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