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The angle between the line joining the points $(1,-2),(3,2)$ and the line $x+2y-7=0$ is

\[\begin {array} {1 1} (a)\;\pi & \quad (b)\;\frac{\pi}{2} \\ (c)\;\frac{\pi}{3} & \quad (d)\;\frac{\pi}{6} \end {array}\]

1 Answer

$(b)\;\frac{\pi}{2}$
answered Nov 7, 2013 by pady_1
 
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