If cot α and cot β are the roots of the equation x2 - 5x + 4 = 0, – McqOptions

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1.	If cot α and cot β are the roots of the equation x2 - 5x + 4 = 0, then what is cot (α + β) equal to ?
A.	1/3
B.	1/4
C.	3/5
D.	2/5
Answer» D. 2/5

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