1. Slope of the side DA of the rectangle ABCD is 1/3. What is the slope of the side AB?
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By: anil on 05 May 2019 02.12 am
Sides DA and AB are perpendicular to each other and product of slopes of two perpendicular lines = -1 Let slope of side AB = $$m$$ an slope of side DA = $$frac{1}{3}$$ => $$m imes frac{1}{3} = -1$$ => $$m = -3$$ => Ans - (D)
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