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[" Example sq If "A,B,C" be an acute ang...

[" Example sq If "A,B,C" be an acute angled triangle,then the "],[" minimum value of tan "^(4)A+tan^(4)B+tan^(4)C" will be"],[[" (a) "729," (b) "27," (c) "81sqrt(3)," (d) none of these "]]

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