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The lines x-2y+6=0 and 2x-y-10=0 interse...

The lines `x-2y+6=0 and 2x-y-10=0` intersect at P. Without finding the co-ordinate of P prove that the equation of the line through P and the origin of co-ordinates is perpendicular to `39x+33y-580=0`.

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Knowledge Check

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