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यदि वक्र `xy+ax+by=0` के बिन्दु (1, 1) पर स्पर्शी x-अक्ष से कोण `tan^(-1)2` पर झुकी है, तो (a, b) के मान होंगे-

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यदि वक्र `xy+ax+by=0` के बिन्दु (1, 1) पर स्पर्शी x-अक्ष से कोण `tan^(-1)2` पर झुकी है, तो (a, b) के मान होंगे-
A. (-1, -2)
B. (-1, 2)
C. (1, -2)
D. (1, 2)
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Correct Answer - C
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