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If the coordinates of the foot of the perpendicular drawn from the point (1,−2) on the line y=2x+1 is (α,β), then the value of |α+β| is |
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Answer» If the coordinates of the foot of the perpendicular drawn from the point (1,−2) on the line y=2x+1 is (α,β), then the value of |α+β| is |
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