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प्रश्न
Find the distance of a point (12 , 5) from another point on the line x = 0 whose ordinate is 9.
उत्तर
Point on the line x = 0 lies on given its ordinate is 9 .
∴ point is P (0 , 9)
Let the point (12 , 5) be A.
AP = `sqrt ((12 - 0)^2 + (5 - 9)^2)`
`= sqrt (144 + 16)`
`= sqrt 160`
`= 4 sqrt 10` units
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