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If the equation of the plane passing through the line of intersection of the panes ax + by + cz +d=0, a _(1) x + b _(1) y + c _(1) z + d _(1) =0 and perpendicular to the XY-plane is px + py + rz + s =0 then S = |
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Answer» `DC _(1)-d _(1) C ` |
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