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The lines y=-3/2x\ and y=-2/5x intersec...

The lines `y=-3/2x\ ` and `y=-2/5x` intersect the curve `3x^2+4x y+5y^2-4=0` at the point `P\ a n d\ Q` respectively. The tangents drawn to the curve at `P\ a n d\ Q\ :` intersect each other at angle of `45^0` are parallel to each other are perpendicular to each other (d) none of these

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