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प्रश्न
Find the distance of the following points from the origin:
(ii) B(-5,5)
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उत्तर
B(-5,5)
Let O(0,0) be the origin.
`OB = sqrt((-5-0)^2 + (5-0)^2)`
`= sqrt((-5)^2 +(5)^2)`
`=sqrt(25+25)`
`=sqrt(50)`
`= sqrt(25xx2)`
`=5 sqrt(2)` units
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Case Study -2
A hockey field is the playing surface for the game of hockey. Historically, the game was played on natural turf (grass) but nowadays it is predominantly played on an artificial turf.
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