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in Coordinate Geometry by (55.4k points)
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Show that the point (a, 0), (0, b) and (1, 1) are collinear if 1/a + 1/b = 1.

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Best answer

Given: (a, 0), (0, b) and (1, 1)

We know the points are collinear if area(∆ABC) = 0

Hence, Proved.

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