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प्रश्न
Find the distance of a point (13 , -9) from another point on the line y = 0 whose abscissa is 1.
उत्तर
Point on the line y = 0 lies on x-axis given acscissa is 1.
∴ point is P (1 , 0)
Let (13 , -9) be point A
AP = `sqrt ((13 - 1)^2 + (-9-0)^2)`
`= sqrt (144 + 81)`
`= sqrt 225`
= 15 units
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