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If the angles made by a straight line with the coordinate axes are $\alpha,\large\frac{\pi}{2},$$ -\alpha, \beta$ then $\beta=$
\[\begin {array} {1 1} (a)\;0 & \quad (b)\;\frac{\pi}{6} \\ (c)\;\frac{\pi}{2} & \quad (d)\;\pi \end {array}\]
jeemain
eamcet
math
2011
q78
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Sep 23, 2013
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meena.p
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$ (c)\;\frac{\pi}{2}$
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Nov 7, 2013
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pady_1
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