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Prove that the points (a, 0), (0, b) and (1, 1) are collinear if, (1/a)+(1/b)=1

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Let A(a, 0), B(0, b) and C(1, 1) be the given points

Area of ΔABC

Hence,  A(a, 0), B(0, b) and C(1, 1) are collinear if (1/a)+(1/b)=1

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