1.

If k is a real constant and A,B,C are variable angles such that √k2−4tanA+ktanB+√k2+4tanC=6k, then the minimum value of tan2A+tan2B+tan2C is

Answer» If k is a real constant and A,B,C are variable angles such that k24tanA+ktanB+k2+4tanC=6k,
then the minimum value of tan2A+tan2B+tan2C is


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