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If 0 is the angle between the curves $xy=2$ and $x^2+4y=0$ and $x^2+4y=0$, then $\tan \theta$ is equal to :

\[\begin {array} {1 1} (a)\;1 & \quad (b)\;-1 \\ (c)\;2 & \quad (d)\;3 \end {array}\]

1 Answer

(d) 3
answered Nov 7, 2013 by pady_1
 
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