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[" 17.If "A+B+C=180^(@)" ,then the value...

[" 17.If "A+B+C=180^(@)" ,then the value of "],[(cot B+cot C)(cot C+cot A)(cot A+cot B)" will be "],[" a) "sec A sec B sec C],[" b) "cosec A cosec B cos ecC],[" c) "tan A tan B tan C],[" d) "1]

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