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