If \cot 𝛼 and \cot 𝛽 are the roots of the equation x^{2}+bx+c=0 with b\neq0,then the value of \cot(\alpha+\beta) is [NDA I 2017]

NDA Math Quadratic Equations and Inequations

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If cot‌𝛼 and cot‌𝛽 are the roots of the equation x2+bx+c=0 with b≠0,then the value of cot(α+β) is

[NDA I 2017]

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