1.

If ABC is nota right andgled triangle and sin((pi)/(4)-A)sin(pi)/(4-B)=-(1)(2sqrt(2))cosec ((pi)/(4)-C) then tan A tan B + tan B tan C + tan C tan A=

Answer»

COT A +cot B + cot C
tan A+ tan B + tan C
`(1)/(" tan A + tan B + tan C")`
`(1)/(" cot A+ cot B + cot C")`

Answer :B


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